The document discusses the history and technology of underfloor heating. It began over 2000 years ago and became popular again in Europe after World War II. Modern systems use plastic pipes buried under lightweight concrete floors with low thermal inertia to provide an even, draft-free heat at lower temperatures. Underfloor heating has advantages like uniform heat distribution, safety, energy efficiency and increased comfort.
Solar space heating support for the buildings. how possible is to heat your house benefit from the solar energy. what are the equipment needed, and how the installations are made.
https://www.zmerly.com/
Floor Heating - Magneto Environmental Grouppe offers under floor heating systems, which can be easily applied under the floors like stone, tiles, wood and carpets.
هذه المقالة تتحدث عن الأبنية الخضراء تعريفها ، أهميتها ، أنظمة تصنيفها ، استراتيجياتها....
تعتبر هذه المقالة فريدة بنوعها في الوطن العربي حيث اعتبرت من أهم المقالات التي تحدثت عن الأبنية الخضراء بشكل سلس و التي طلبت من عدة مصادر في الوطن العربي ....أتمنى لكم الاستمتاع بقرأتها و الاستفادة منها .... فلنجعل حياتنا خضراء .... And Go Green
Solar space heating support for the buildings. how possible is to heat your house benefit from the solar energy. what are the equipment needed, and how the installations are made.
https://www.zmerly.com/
Floor Heating - Magneto Environmental Grouppe offers under floor heating systems, which can be easily applied under the floors like stone, tiles, wood and carpets.
هذه المقالة تتحدث عن الأبنية الخضراء تعريفها ، أهميتها ، أنظمة تصنيفها ، استراتيجياتها....
تعتبر هذه المقالة فريدة بنوعها في الوطن العربي حيث اعتبرت من أهم المقالات التي تحدثت عن الأبنية الخضراء بشكل سلس و التي طلبت من عدة مصادر في الوطن العربي ....أتمنى لكم الاستمتاع بقرأتها و الاستفادة منها .... فلنجعل حياتنا خضراء .... And Go Green
The remote condenser with TKMicro Inside.
The highest resistance of alluminium LLA (Long Life Alloy) to corrosion (SWAAT Test over 80 days in accordance with the ASTM G85-02 norm) ensures reliability and performance.
§ Thickness and configuration, unique on the market, make it more resistant to vibrations, water hammer and corrosive environments.
§ The peculiar header shape reduces pressure drops on the refrigerant side and allows the use of a single circuit.
§ Suitable to all standard refrigerants (R410A, R134a, R22, R407C, R404A, R290, R507A, R245fa ect..). § The low pressure drops of TKMicro cores available in every size (up to 6 meters) allow to satisfy the needs of high-performance chiller manufacturers.
§ Easy cleaning and maintenance.
§ In case of need ThermoKey can provide a kit for a quick and easy repair to be used directly on site.
History of solar energy, types and applications, passive and active, thermal, solar water heaters, photovoltaic, concentrated, and others
https://www.zmerly.com/
The remote condenser with TKMicro Inside.
The highest resistance of alluminium LLA (Long Life Alloy) to corrosion (SWAAT Test over 80 days in accordance with the ASTM G85-02 norm) ensures reliability and performance.
§ Thickness and configuration, unique on the market, make it more resistant to vibrations, water hammer and corrosive environments.
§ The peculiar header shape reduces pressure drops on the refrigerant side and allows the use of a single circuit.
§ Suitable to all standard refrigerants (R410A, R134a, R22, R407C, R404A, R290, R507A, R245fa ect..). § The low pressure drops of TKMicro cores available in every size (up to 6 meters) allow to satisfy the needs of high-performance chiller manufacturers.
§ Easy cleaning and maintenance.
§ In case of need ThermoKey can provide a kit for a quick and easy repair to be used directly on site.
History of solar energy, types and applications, passive and active, thermal, solar water heaters, photovoltaic, concentrated, and others
https://www.zmerly.com/
A comprehensive reminder for all engineers, containing thermodynamics, heat transfer, heat production, flow of water, pressure and pressure drop.
https://www.zmerly.com/
Design and types of heating circuit, piping, safety, pressure, air purge, water treatment.
with calculation and sample project.
https://www.zmerly.com/
Solar thermal collector, types, characteristics, components, design, efficiency, installation and calculation, number of collector needed for a project.
https://www.zmerly.com/
Sizing and selection of radiators for central heating system, with all types of radiators, correction factors, radiator distribution.
https://www.zmerly.com/
A tale of scale & speed: How the US Navy is enabling software delivery from l...sonjaschweigert1
Rapid and secure feature delivery is a goal across every application team and every branch of the DoD. The Navy’s DevSecOps platform, Party Barge, has achieved:
- Reduction in onboarding time from 5 weeks to 1 day
- Improved developer experience and productivity through actionable findings and reduction of false positives
- Maintenance of superior security standards and inherent policy enforcement with Authorization to Operate (ATO)
Development teams can ship efficiently and ensure applications are cyber ready for Navy Authorizing Officials (AOs). In this webinar, Sigma Defense and Anchore will give attendees a look behind the scenes and demo secure pipeline automation and security artifacts that speed up application ATO and time to production.
We will cover:
- How to remove silos in DevSecOps
- How to build efficient development pipeline roles and component templates
- How to deliver security artifacts that matter for ATO’s (SBOMs, vulnerability reports, and policy evidence)
- How to streamline operations with automated policy checks on container images
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...Neo4j
Leonard Jayamohan, Partner & Generative AI Lead, Deloitte
This keynote will reveal how Deloitte leverages Neo4j’s graph power for groundbreaking digital twin solutions, achieving a staggering 100x performance boost. Discover the essential role knowledge graphs play in successful generative AI implementations. Plus, get an exclusive look at an innovative Neo4j + Generative AI solution Deloitte is developing in-house.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Unlocking Productivity: Leveraging the Potential of Copilot in Microsoft 365, a presentation by Christoforos Vlachos, Senior Solutions Manager – Modern Workplace, Uni Systems
Sudheer Mechineni, Head of Application Frameworks, Standard Chartered Bank
Discover how Standard Chartered Bank harnessed the power of Neo4j to transform complex data access challenges into a dynamic, scalable graph database solution. This keynote will cover their journey from initial adoption to deploying a fully automated, enterprise-grade causal cluster, highlighting key strategies for modelling organisational changes and ensuring robust disaster recovery. Learn how these innovations have not only enhanced Standard Chartered Bank’s data infrastructure but also positioned them as pioneers in the banking sector’s adoption of graph technology.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...SOFTTECHHUB
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Dr. Sean Tan, Head of Data Science, Changi Airport Group
Discover how Changi Airport Group (CAG) leverages graph technologies and generative AI to revolutionize their search capabilities. This session delves into the unique search needs of CAG’s diverse passengers and customers, showcasing how graph data structures enhance the accuracy and relevance of AI-generated search results, mitigating the risk of “hallucinations” and improving the overall customer journey.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Removing Uninteresting Bytes in Software FuzzingAftab Hussain
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
2. WHAT IS “FLOOR HEATING”
TO USE THE FLOOR AS A HEAT EMISSION SURFACE
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3. HISTORICAL BACKGROUND
2000 years ago
Heating systems inspired by this idea were
built by the Chinese, Egyptians and Romans.
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4. HISTORICAL BACKGROUND
1900
At the start of this century floor heating appears in
its present form.
Hot water cycles inside a tube burred under ground.
In London in 1909, one of the Royal
palaces was heated with this new system.
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5. HISTORICAL BACKGROUND
1945 TO 1950
In Europe, from 1945 to 1950, over 100,000 homes were heated by this technique.
Very soon, however, it was noted that the equipment was
causing numerous physiological problems due to the
following facts:
Metallic pipes instead of plastic
(long distance between pipes)
No use of cement slab, High thermal
inertia.
40ºC
The boiler temperature
was 70ºC to 80ºC. The
reason why the floor
temperature was 34ºC to
40ºC. Which caused also
some health problems.
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6. THE NEW SYSTEMS
FROM 1970s
3 New values were added: • Use of Floating floors.
Low thermal inertia of the floor slab. • More insulation, Low heat losses.
Low surface temperature (28 - 29ºC).
Uniform heat distribution. • Plastic pipes, small pitches.
29ºC
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7. ADVANTAGES
☺ Uniform heat distribution.
☺ Healthy conditions. Absence of air draughts.
☺ Safety.
☺ Space saving.
☺ Low noise
☺Temperature reduction from feet to head.
☺ Lack of dryness due to low temperatures.
☺ Friendly to the environment.
☺ Efficient. Low operating cost.
☺ Reduction of roof thermal loses.
☺ Short-term depreciation.
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8. INCONVIENIENTS
HEATING OUTPUT RELATED TO RELATIVLY HIGH THERMAL
LIMITED AREA. INERTIA.
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9. HEAT AND COMFORT
RADIATOR HEATING FLOOR HEATING
Hottest part of the room is at ceiling Coolest part of the room is at ceiling level.
level. Room temperature setting below 21ºC (19).
Room temperature setting at 21ºC. No draught.
Cold feet due to cooler convective air No cold feet.
current. Less dust which can settle on walls, furniture
and curtains.
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13. LAYOUT
Distribution
manifold
Loops
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14. LAYOUT
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15. LOOP CONFIGURATIONS
variation
SINGLE SERPENTINE
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16. LOOP CONFIGURATIONS
Floor temperature
Variation
PARALLEL SUPPLY AND RETURN – COUNTERFLOW TYPE
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17. LOOP CONFIGURATIONS
Floor temperature
Variation
PARALLEL SUPPLY AND RETURN – SPIRAL TYPE
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18. LOOP CONFIGURATIONS
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19. MATERIALS
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20. PIPES
PEX – ALU - PEX
PEX with oxygen barrier
PIPE REEL
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21. MANIFOLDS
For correct operation and maintenance of the
system, manifolds must have:
•Main on/off valves,
•Panel on/off valves,
•Micrometric panel regulating valves,
•Automatic air vents,
•Drain cocks.
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22. MANIFOLDS
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23. PERIFERAL INSULATION STRIP
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24. INSULATION BOARD
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25. INSULATION BOARD
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26. INSULATION BOARD
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27. EXPASION JOINTS
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28. NETWORK TESTING
•For 30 min at 150% of working pressure
•For 90 min at double working pressure
•Installation test
•Same pressure during the pouring of thermal
concrete
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29. CONCRETE COMPOSITION
1m³of concrete contain
• 0,8m³ river sand
• 0,4m³ gravel, 4 - 6mm grain size
• 350 kg cement
• 2,5 kg plasticizer
• 250 kg water
• 900 gr/m³ polypropylene fibers
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30. CALCULATION PARAMETERS
Ambient air temperature
Outer diameter of pipe Thermal resistance of the floor
Internal diameter of pipe Thermal conductivity of slab
Thermal conductivity of pipe Thickness of slab above pipe
Flow temperature of water Panel surface
Center to center distance Thermal resistance below panel
Underneath room temperature
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31. REQUIRMENTS
The most frequently used grids are as follows:
CENTER TO CENTER DISTANCE • 7,5 15,0 22,5 30,0 37,5
• 5,0 10,0 15,0 20,0 30,0
• 45 a 55°C with traditional boilers;
MAXIMUM DESIGN WATER • 40 a 45°C with district heating, condensing
TEMPERATURE boilers, heat pumps;
• 32 a 38°C with solar panels.
Two aspects in consideration :
HEAT OUTPUT REQUIRED • the lack of heat loss through the floors,
• the heat contribution of any panels located on
the floor above.
SURFACE TEMPERATURE OF To avoid uncomfortable physiological conditions, the
THE FLOOR surface temperature of the floor should be less than:
• 29°C in continuously occupied environments,
• 33°C in bathrooms, showers and swimming pools,
• 35°C in perimeter areas or rooms rarely used.
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32. REQUIRMENTS
It is advisable not to be too high in order:
TEMPERATURE DIFFERENCE OF • not to over-reduce the average temperature of the
HEATING FLUID fluid, and thus the heat output of the panel;
• to avoid surface temperatures which differ too much
from each other,
• Usually it is used below 8 ÷ 10°C
Considering that the maximum flow of a panel is on
PANEL FLOW average between:
•200 ÷ 220 l/h, for pipes with Di = 16 mm
•120 ÷ 130 l/h, for pipes with Di = 13 mm
It is advisable that the difference between the preset
HEAD REQUIRED
head and that should be at least 200 ÷ 300 mm w.g.
In domestic applications, it is advisable not to go
LENGTH OF THE PANEL
beyond the commercial lengths of pipe rolls (120 ÷
150 metres)
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33. HEAT OUTPUT
tp = surface temperature of floor, °C
ta = ambient temperature, °C
q = specific heat output (upwards) of panel, W/m2
In particular (at ambient temperature = 20°C), the maximum specific output which can be
transferred by a panel is:
• qmax = 8,92 . ( 29 – 20 ) 1,1 = 100 W/m2 in continuously inhabited environments.
• qmax = 8,92 . ( 33 – 20 ) 1,1 = 150 W/m2 in bathrooms, showers and swimming pools.
• qmax = 8,92 . ( 35 – 20 ) 1,1 = 175 W/m2 in perimeter areas or rooms rarely used.
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34. CONTROL SYSTEM
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35. CONTROL SYSTEM
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36. BOILER ROOM
Mixing Valve
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38. WALL HEATING
Radiant wall heating is one of the most comfortable form of heating available.
Water circulating at 30-40ºC in pipes built into the wall provides gentle but
highly efficient radiant heat.
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39. CEILING HEATING
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40. ELECTRICAL FLOOR HEATING
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