This document discusses quality installation of high efficiency heating and cooling systems. It outlines common installation issues like improper equipment sizing, duct design problems, duct and air leakage, and improper filter and equipment setup. These issues can significantly impact a system's performance and efficiency. The document emphasizes that proper static pressure and temperature measurements are important diagnostics to evaluate overall system performance and identify airflow restrictions or other problems. A quality installation is key to ensuring a system can deliver close to its full rated efficiency and performance.
An engineering perspective on biometric sensor integration in wearablesValencell, Inc
Integrating biometric sensors into wearables can be one of the most challenging aspects of building a wearable or hearable.
Valencell’s engineering team has been involved in more than 50 different biometric wearable projects. We’ve gathered up the most common questions our engineers receive during the product design and development process, and VP of Engineering, Dr. Mike Aumer, will share our answers to those questions.
An engineering perspective on biometric sensor integration in wearablesValencell, Inc
Integrating biometric sensors into wearables can be one of the most challenging aspects of building a wearable or hearable.
Valencell’s engineering team has been involved in more than 50 different biometric wearable projects. We’ve gathered up the most common questions our engineers receive during the product design and development process, and VP of Engineering, Dr. Mike Aumer, will share our answers to those questions.
Mr Ashish Munjal, Director Controls Business, Johnson Controls India gave presentation on healing architecture at CII-IGBC's 15th Green Building Congress 2017 event at Jaipur
ACHRNEWS.COM | | AUGUST 15, 2016 19
an industry, we’ve done a good
job promoting high-efficiency
equipment, but we haven’t done
enough to ensure these new sys-
tems actually perform as adver-
tised. Yeah, it likely blows warm
or cool air, and it most likely will
perform better than the one it
has just replaced.
Homeowners may even have
engaged a utility program that
offered a rebate for buying an
Energy Star-qualified system.
Our homeowners will hope that
the $8,000-plus they spent on
new HVAC systems will reduce
their energy bills. But, to be
honest, HVAC technicians are
often too busy to check the per-
formance of the system, even if
they know how. And the home-
owner will be stuck with poor
comfort, ongoing maintenance,
and high utility bills. It’s just not
fair, and it’s not necessary.
Sadly, when we do follow-up
evaluations of HVAC systems,
we find they seldom perform at
their rated capacity, with bad
consequences for energy con-
sumption, comfort, safety, and
maintenance. These systematic
shortcomings are caused by many
factors — one of the biggest being
homeowners who neither under-
stand nor demand proof that
the new system is performing as
well as the slick brochures claim.
Ignorance is bliss until things
such as oversizing, short-cycling,
duct leakage, and high static
pressures undermine the system’s
proper operation. I hate to sim-
plify this as, “It’s the installation,
stupid,” though, let me be clear:
It’s the design, the ducts, the com-
missioning, and the maintenance.
All of these must be verified to
ensure the system performs as
the manufacturer intends, the
contractor hopes, and the home-
owners expect.
The situation is often not much
better on jobs that are imple-
mented by home-performance
contractors, who are focused pri-
marily on the building envelope.
Many of these firms do not have
the expertise, tools, or licens-
ing that would enable them to
effectively address problems with
HVAC systems. So, the HVAC
work is subbed out and the home-
performance contractor cannot
ensure that the homeowner got a
high-quality HVAC installation.
Unfortunately, many HVAC
installations are implemented as
rush jobs. Part of the problem is
that price pressure and competi-
tion are severe in today’s market,
whether the HVAC contractor is
working as a subcontractor to
a general contractor or directly
with homeowners.
Homeowners seldom main-
tain their equipment, and when
a minor problem crops up, they
often choose to fix and forget
until the system fails catastrophi-
cally. Then comes panic time
and another rush job. Most
homeowners consider HVAC
equipment to be a simple piece
of plug-and-play machinery, and
they have no idea how complex
it is to design and commission a
new system, nor do most HVAC
contractors have time to educate
them. Adding to this crisis plan-
ning is the fact that HVAC sys-
tems do not usually fail in good
weather, so the working condi-
tion ...
These slides, covering the topics of Software Maintenance and Evolution, are introductory slides to the course LINGI2252 “Software Maintenance and Evolution”, given by Prof. Kim Mens at UCL, Belgium
Company Challenges - IntelliSense.io - EPSRC Conference on Industrial Sustain...IntelliSense.io
Our slide for the EPSRC Conference 'Delivering Impact in Sustainable Manufacturing'.
Company Challenges - (small companies doing interesting things in their areas)
Utilizing Analytics to Drive Change in Buildings - Apem Sept 18 2015buildpulse
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Report for Laboratory work on OMRON D6F Flow Sensor Name.docxchris293
Report for Laboratory work on: OMRON D6F Flow Sensor Name: Dylan Hughes
EGT-280: Introduction to Microtechnology
Cover Page
Report #1
Name of Report: MEMS Project Report
Your Name: Dylan Hughes
Submitted to:
Dr. S.M. Allameh
In partial fulfillment of the requirements for
EGT-280:
Introduction to Microtechnology
Department of Physics and Geology
Northern Kentucky University
June 2017
Report for Laboratory work on: OMRON D6F Flow Sensor Name: Dylan Hughes
EGT-280: Introduction to Microtechnology
Name of Report: MEMS Project Report
By: Dylan Hughes
Abstract:
This project report discusses the MEMS selection process, initial setup and wiring of the
MEMS device, problems/difficulties encountered, and internal inspection and functionality of
an OMRON D6F-P0010A2 MEMS Mass Flow Sensor. The internal inspection reveals the
functionality, principles, and theories that govern operation of a thermal mass flow sensor.
Selection criteria for the MEMS device is also discussed, as well as the importance of having the
correct connections and equipment to power and communicate with a micro device.
Introduction:
The OMRON D6F-P series of flow sensors offers compact size, excellent accuracy, and a
dust segregation system that allows the flow sensor to be used in dirty, dusty environments.
Because of the micro device’s size, it can be used in very tight, space-critical applications. Mass
flow sensors similar to the D6F-P line are being used in many applications today. The most
common use for flow sensors is within the automotive industry. Flow sensors are used to
monitor the amount of air flowing through the intake system and into the combustion
chamber. The onboard computer then uses that data, along with several other sensor’s data, to
calculate the proper air-to-fuel ratio for the current running conditions. Flow sensors are also
used to control engine idle, monitor recirculatory exhaust systems, and keep the interior of the
vehicle cool and comfortable.
Flow sensors have also seen an increase use within the HVAC industry. Because of OMRON’s
dust segregation system, the D6F line of MEMS flow sensors can be used to monitor air in nasty
environments. Micro flow sensors typically have a maximum flow rate of 1.0 LPM. The low flow
rate allows the sensor to be placed within a bypass system. The flow rate of the bypass air is
then proportional to the flow rate for the entire system.
Selection Process:
The OMRON D6F-P0010A2 sensor was selected for several reasons. Firstly, because of
my experience with various flow sensors on-the-job and in automotive repair work. I have
worked with several different flow sensors but have never had the opportunity to open one
and discover how it works. Being so familiar with their functionality and importance, especially
within the automotive industry, I was very excited to see the internal w.
Taurus Zodiac Sign_ Personality Traits and Sign Dates.pptxmy Pandit
Explore the world of the Taurus zodiac sign. Learn about their stability, determination, and appreciation for beauty. Discover how Taureans' grounded nature and hardworking mindset define their unique personality.
Unveiling the Secrets How Does Generative AI Work.pdfSam H
At its core, generative artificial intelligence relies on the concept of generative models, which serve as engines that churn out entirely new data resembling their training data. It is like a sculptor who has studied so many forms found in nature and then uses this knowledge to create sculptures from his imagination that have never been seen before anywhere else. If taken to cyberspace, gans work almost the same way.
Accpac to QuickBooks Conversion Navigating the Transition with Online Account...PaulBryant58
This article provides a comprehensive guide on how to
effectively manage the convert Accpac to QuickBooks , with a particular focus on utilizing online accounting services to streamline the process.
India Orthopedic Devices Market: Unlocking Growth Secrets, Trends and Develop...Kumar Satyam
According to TechSci Research report, “India Orthopedic Devices Market -Industry Size, Share, Trends, Competition Forecast & Opportunities, 2030”, the India Orthopedic Devices Market stood at USD 1,280.54 Million in 2024 and is anticipated to grow with a CAGR of 7.84% in the forecast period, 2026-2030F. The India Orthopedic Devices Market is being driven by several factors. The most prominent ones include an increase in the elderly population, who are more prone to orthopedic conditions such as osteoporosis and arthritis. Moreover, the rise in sports injuries and road accidents are also contributing to the demand for orthopedic devices. Advances in technology and the introduction of innovative implants and prosthetics have further propelled the market growth. Additionally, government initiatives aimed at improving healthcare infrastructure and the increasing prevalence of lifestyle diseases have led to an upward trend in orthopedic surgeries, thereby fueling the market demand for these devices.
Improving profitability for small businessBen Wann
In this comprehensive presentation, we will explore strategies and practical tips for enhancing profitability in small businesses. Tailored to meet the unique challenges faced by small enterprises, this session covers various aspects that directly impact the bottom line. Attendees will learn how to optimize operational efficiency, manage expenses, and increase revenue through innovative marketing and customer engagement techniques.
[Note: This is a partial preview. To download this presentation, visit:
https://www.oeconsulting.com.sg/training-presentations]
Sustainability has become an increasingly critical topic as the world recognizes the need to protect our planet and its resources for future generations. Sustainability means meeting our current needs without compromising the ability of future generations to meet theirs. It involves long-term planning and consideration of the consequences of our actions. The goal is to create strategies that ensure the long-term viability of People, Planet, and Profit.
Leading companies such as Nike, Toyota, and Siemens are prioritizing sustainable innovation in their business models, setting an example for others to follow. In this Sustainability training presentation, you will learn key concepts, principles, and practices of sustainability applicable across industries. This training aims to create awareness and educate employees, senior executives, consultants, and other key stakeholders, including investors, policymakers, and supply chain partners, on the importance and implementation of sustainability.
LEARNING OBJECTIVES
1. Develop a comprehensive understanding of the fundamental principles and concepts that form the foundation of sustainability within corporate environments.
2. Explore the sustainability implementation model, focusing on effective measures and reporting strategies to track and communicate sustainability efforts.
3. Identify and define best practices and critical success factors essential for achieving sustainability goals within organizations.
CONTENTS
1. Introduction and Key Concepts of Sustainability
2. Principles and Practices of Sustainability
3. Measures and Reporting in Sustainability
4. Sustainability Implementation & Best Practices
To download the complete presentation, visit: https://www.oeconsulting.com.sg/training-presentations
Business Valuation Principles for EntrepreneursBen Wann
This insightful presentation is designed to equip entrepreneurs with the essential knowledge and tools needed to accurately value their businesses. Understanding business valuation is crucial for making informed decisions, whether you're seeking investment, planning to sell, or simply want to gauge your company's worth.
The world of search engine optimization (SEO) is buzzing with discussions after Google confirmed that around 2,500 leaked internal documents related to its Search feature are indeed authentic. The revelation has sparked significant concerns within the SEO community. The leaked documents were initially reported by SEO experts Rand Fishkin and Mike King, igniting widespread analysis and discourse. For More Info:- https://news.arihantwebtech.com/search-disrupted-googles-leaked-documents-rock-the-seo-world/
Attending a job Interview for B1 and B2 Englsih learnersErika906060
It is a sample of an interview for a business english class for pre-intermediate and intermediate english students with emphasis on the speking ability.
Affordable Stationery Printing Services in Jaipur | Navpack n PrintNavpack & Print
Looking for professional printing services in Jaipur? Navpack n Print offers high-quality and affordable stationery printing for all your business needs. Stand out with custom stationery designs and fast turnaround times. Contact us today for a quote!
Remote sensing and monitoring are changing the mining industry for the better. These are providing innovative solutions to long-standing challenges. Those related to exploration, extraction, and overall environmental management by mining technology companies Odisha. These technologies make use of satellite imaging, aerial photography and sensors to collect data that might be inaccessible or from hazardous locations. With the use of this technology, mining operations are becoming increasingly efficient. Let us gain more insight into the key aspects associated with remote sensing and monitoring when it comes to mining.
1. Outside the
Box
Introduction to Quality Installation of
High Efficiency Heating and Cooling Systems
2. Overview
Outside the Box – Introduction to Quality
Installation of High Efficiency HVAC Systems
• Common Installation Issues Impacting Performance
• Pressure Measurement and Diagnostics
• Temperature Measurement and Diagnostics
• Equipment vs. System Performance
• Finding a Professional
• Conclusion - Next Steps
6. Common Installation Issues Impacting Performance
How Do Contractors Size Equipment?
Survey Results (FSEC - 489 HVAC Contractors)
– Software Represents Manufacturer’s Software
– Other is primarily use of a “Short Form” or Utility Method
34. Temperature Measurement & Diagnostics
Percent of System BTU Duct Loss or Gain
Let’s take a look at system performance.
This quick test and calculation offers a snapshot of system
performance by taking only four temperature
measurements and working a short formula.
Gather the following four temperature measurements.
1. The temperature entering the equipment
2. The temperature exiting the equipment
3. A typical supply register air temperature
4. A typical return grille air temperature
Page 119
35. Temperature Measurement & Diagnostics
Percent of System BTU Duct Loss or Gain
Next, subtract to find the equipment delta t, and subtract to find
the system delta t. The divide as shown in the formula below.
System Loss or Gain Formula
Duct System Temperature Loss
System Loss % =
Equipment Temperature Change
Page 119
36. Percent of System BTU Duct Loss or Gain
Cooling Example:
Temperature Diagnostics and Repairs
Duct System Temperature Gain = 9°
= 50% System Gain
Equipment Temperature Change = 18°
Heating Example:
Duct System Temperature Loss = 15°
= 25% System Loss
Equipment Temperature Change = 60°
Page 119
37. Duct Loss Example (Sensible BTUs)
72°
67°
Temperature Measurement & Diagnostics
Heating Mode
Equipment ΔT 50°
System ΔT 30°
Return Duct Loss 5°
Supply Duct Loss 15°
What would the supply
register temp be if there
was no duct loss? 117° 102°
122º
Page 120
38. Duct Loss Example (Sensible BTU)
Temperature Measurement & Diagnostics
Heating Mode – Use Data from Previous Drawing
Return Grille Temp = 72° Supply Reg Temp = 102°
Return Plenum Temp = 67° Supply Plenum Temp = 117°
Return Duct Loss = 5° Supply Duct Loss = 15°
Return Duct Loss + Supply Duct Loss = Total Duct Loss
5° + 15° = 20°
Total Duct Loss / Equipment ΔT = % Duct Temp Loss
20° / 50° = 40%
Page 121
39. Temperature Measurement & Diagnostics
Duct Loss Challenge (Sensible BTU)
73°
69°
Heating Mode
Equipment ΔT 50 °
System ΔT 29 °
Return Duct Loss 4 °
Supply Duct Loss 17 °
What would the
supply register
temp be if there
was no duct loss? 119° 102°
____
123º
Page 122
40. Duct Loss Example (Sensible BTU)
Temperature Measurement & Diagnostics
Heating Mode – Use Data from Previous Drawing
Return Grille Temp = 73° Supply Reg Temp = 102°
Return Plenum Temp = 69° Supply Plenum Temp = 119°
Return Duct Loss = 4º Supply Duct Loss = 17°
Return Duct Loss + Supply Duct Loss = Total Duct Loss
17° + 4° = 21°
Total Duct Loss / Equipment ΔT = % Duct Temp Loss
21° / 50° = 42%
Page 123
41. Temperature Measurement & Diagnostics
Duct Loss Challenge (Sensible and Total BTU)
76° DB 70° DB
63.8° WB 62.4° WB
Cooling Mode
ΔT ΔH
Equipment ° ____
System ° ____
Ret. Duct Loss ° ____
Sup. Duct Loss ° ____
60° DB 66° DB
56.2° WB 58.1° WB
Page 125
42. Temperature Measurement & Diagnostics
Duct Loss Challenge (Sensible and Total BTU)
76° DB 70° DB
63.8° WB 62.4° WB
Cooling Mode
ΔT
Equipment 16 °
System 4°
Ret. Duct Loss 6°
Sup. Duct Loss 6 °
60° DB 66° DB
56.2° WB 58.1° WB
Page 125
43. Duct Loss Example (Sensible BTU)
Temperature Measurement & Diagnostics
Cooling Mode – Use Data from Previous Drawing
Return Grille Temp = 70° Supply Reg Temp = 66°
Return Plenum Temp = 76° Supply Plenum Temp = 60°
Return Duct Loss = 6º Supply Duct Loss = 6°
Return Duct Loss + Supply Duct Loss = Total Duct Loss
6° + 6° = 12°
Total Duct Loss / Equipment ΔT = % Duct Temp Loss
12° / 16° = 75%
Page 126