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![Improving
Building
Comfort
with
Natural
Cooling
and
Insulating
Materials
Introduction
1. Background
• In many countries, especially developing ones like Pakistan, a lot of energy is used
for cooling and heating homes.
• Most homes rely on air conditioners, which use harmful gases and increase
electricity bills [1].
• Exploring a passive cooling technique using Phase Change Materials (PCMs) and
insulating materials inside building walls.
a. Heat Storing.
b. Maintaining comfortable indoor temperatures.
3](https://image.slidesharecdn.com/trwproposalppt1-250528055743-763fe208/85/TRW_proposal_ppt-1-pptxffffffffffffffffffffffffffffff-3-320.jpg)
![Improving
Building
Comfort
with
Natural
Cooling
and
Insulating
Materials
Literature Review
An experimental evaluation of thermal behavior of the building
envelope using macroencapsulated PCM for energy savings
Authors: Pushpendra Kumar Singh Rathore*, Shailendra Kumar Shukla
Key Findings:
1.Walls Temperature
2.Thermal amplitude
3.Time lag
4.Heat Flux
PCM Used:
1.OM37 (Melting Temperature range 36-40*C)
Location/ Season:
GLA University, Mathura (India)/ Summer Season (12th July, 2018) [2] 9](https://image.slidesharecdn.com/trwproposalppt1-250528055743-763fe208/85/TRW_proposal_ppt-1-pptxffffffffffffffffffffffffffffff-9-320.jpg)
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- 1. Technical Report Writing& Presentation Skills Course Instructor: Miss Rabia Ramzan “Research Proposal Presentation” Presented By: 22-ME-04, 08, 52, 64, 136 May 05, 2025. 1
- 2. Improving Building Comfortwith Phase Change and Insulating Materials Topic 2
- 3. Improving Building Comfort with Natural Cooling and Insulating Materials Introduction 1. Background • Inmany countries, especially developing ones like Pakistan, a lot of energy is used for cooling and heating homes. • Most homes rely on air conditioners, which use harmful gases and increase electricity bills [1]. • Exploring a passive cooling technique using Phase Change Materials (PCMs) and insulating materials inside building walls. a. Heat Storing. b. Maintaining comfortable indoor temperatures. 3
- 4.
- 5.
- 6. Improving Building Comfort with Natural Cooling and Insulating Materials Introduction 2. Problem Statement Currentcooling systems increase pollution and causes global warming. Many homes lose energy due to poor storage systems, making cooling costly and unsustainable. There is a need for a better way to store and use energy for cooling that is both eco- friendly and cost-effective. 6
- 7. Improving Building Comfort with Natural Cooling and Insulating Materials Introduction 3. Research Questions •Can using PCMs in building walls reduce the need for air conditioning? • How effective is the PCM system in keeping indoor temperatures comfortable? • What is the best design and placement for PCM capsules in walls? • How much energy and money can be saved using this system? 7
- 8. Improving Building Comfort with Natural Cooling and Insulating Materials Introduction 4. Objectives • Todesign a latent heat storage system using PCM. • To choose the best PCM and insulation material for building walls. • To test the system using computer simulations (ANSYS Fluent). • To study how much the PCM system improves indoor comfort and reduces energy use. 8
- 9. Improving Building Comfort with Natural Cooling and Insulating Materials Literature Review An experimentalevaluation of thermal behavior of the building envelope using macroencapsulated PCM for energy savings Authors: Pushpendra Kumar Singh Rathore*, Shailendra Kumar Shukla Key Findings: 1.Walls Temperature 2.Thermal amplitude 3.Time lag 4.Heat Flux PCM Used: 1.OM37 (Melting Temperature range 36-40*C) Location/ Season: GLA University, Mathura (India)/ Summer Season (12th July, 2018) [2] 9
- 10. Improving Building Comfort with Natural Cooling and Insulating Materials Reference Cubicle ExperimentalCubicle (Without PCM) (With PCM) Reference Paper 1
- 11. Improving Building Comfort with Natural Cooling and Insulating Materials Experimental Cubicle ReferenceCubicle (With PCM) (Without PCM) Reference Paper & Expected Results 1
- 12. Improving Building Comfort with Natural Cooling and Insulating Materials Gap Identification 1.Location (Differencein environmental conditions) • Solar Irradiation • Outdoor Temperature • Humidity (Amount of water vapours in air) 2.PCM Type • RT28 • RT44 3.Both for Summer and Winter Season 4. Experimentation & Simulation 1
- 13. Improving Building Comfort with Natural Cooling and Insulating Materials Methodology Literature Review & ResearchGap Identification Experimentation & Results Validation Numerical Modeling: Simulation System Designing Design Calculations Conclusion 1
- 14. Improving Building Comfort with Natural Cooling and Insulating Materials Expected Results • UsingPCM in walls will reduce indoor temperatures by around 3 to 4°C during hot conditions. • PCM will absorb and store heat during the day and release it at night, keeping rooms cooler without needing air conditioners. • The system will cut down electricity usage, especially for cooling, leading to lower energy bills. • Simulations will prove that this method works well in different weather conditions. 1
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- 17. Improving Building Comfort with Natural Cooling and Insulating Materials References 1.Soares, N., Costa,J. J., Gaspar, A. R., & Santos, P. (2013). Review of passive PCM technology in building envelopes. Energy and Buildings, 59, 82–103. https://doi.org/10.1016/j.enbuild.2012.12.042 2.Rathore, P. K. S., & Shukla, S. K. (2019). Thermal performance enhancement in buildings using Phase Change Material (PCM): A review. Renewable and Sustainable Energy Reviews, 78, 1470–1497. https://doi.org/10.1016/j.rser.2017.04.006 1
- 18.
Editor's Notes
- #1 Assalam u Alaikum, I am Khizer Aftab, a third year mechanical engg. Student at uet Taxila. Today, here I am going to represent my research proposal under the course TRW and PS.
- #2 The topic of our research is :
- #3 As we all know that earth globe is getting warmer because of emission of greenhouse gases and global warming. Because of this, we are facing the extreme weather conditions, like summer, it is becoming extremely hot season as well winter, it is becoming extremely cold. One of its reason is the use of refrigeration, air conditioning and heating appliances that releases harmful gases like CO2, nitrogen oxides. So, we are using PCM in place of these things inside the walls of building. Two main uses of it are;
- #4 Here, I have added a picture of PCM, on left side we may see it in solid form, and on right side we may see it in liquid form. Why it is called phase change? Its because these materials can transform their phase at constant temperature.
- #5 Like if we take an example of candle, the paraffin wax used in it is a PCM. When we apply heat to candle, it will start melting, and after sometime, when it cools down, it becomes solid.
- #6 I hope the problem statement is now much clear. The current cooling systems are: 1. more costlier 2. causing pollution 3. unsustainable so there is need of adopting a new way that is more efficient and eco-friendly.
- #7 The research questions that arise are: 1. Will PCM reduce the need of AC systems? 2. Will they be more cost effective and more efficient? 3. and how can we design them?
- #10 Here is a CAD model their experimentation.
- #11 Tis is the picture of their experimental setup.
- #12 Based on this research paper, I have highlighted 4 different points in gap identification section.
- #13 Here is a detailed flowchart of our methodology. Starting from reviewing the literature and identifying the gap.
- #14 Based on previous researchs, the expected outcomes will be: previous research have shown that PCM reduces temp upto 3-4*C. they absorb heat during daytime, when walls are exposed to sun and release heat at night. If these systems will be efficient, thent hey will also cut down the use of electricity.