Evaluation of shape-stabilization phase change material sheets to improve the heating load reduction based on the indoor application method

The present study aims to make a comparison of the thermal behaviour for various exterior Packaging materials (Local or Imported) or a new proposed (a phase change material), which are used in covering the facades of buildings in Kirkuk city/Iraq. And thus know how much those materials effect on energy conservation (rationalization in energy consumption). In this study the focus was on making comparison of heat dissipation and power consumption (Save energy) when using the conventional and proposed materials and which of them has the greatest ability to withstand various environmental conditions. The study was carried out (from the beginning of January 2017 until the end of February, 2017) which this period represents the cold months in the year. (Where temperatures ranged from−2 to 15 °C) which within those months all facilities, buildings need to be heated. The thermal conductivity of various classical covering materials samples was measured and compared with the values of the other certified project sources. It was found through analysis of the results that the use of proposed material which is a phase change material (Paraffin Wax) exceeds in terms of energy reduction than other classical covering materials. It was also shows that the use of classical and proposed covering materials reduces heat loss through the exterior walls (reducing demanded heating load in the comfort zone), thus minimizing the consumption of (save) expended energy within the comfort.

Download Full-text

Thermal Performance of Nanofluid Charged Heat Pipe With Phase Change Material for Electronics Cooling

Journal of Electronic Packaging ◽

10.1115/1.4028994 ◽

2015 ◽

Vol 137 (2) ◽

Cited By ~ 17

Author(s):

Sandesh S. Chougule ◽

S. K. Sahu

Keyword(s):

Phase Change ◽

Heat Pipe ◽

Phase Change Material ◽

Thermal Performance ◽

Electronics Cooling ◽

Electronic Cooling ◽

Load Tests ◽

Heating Load ◽

Cooling Module ◽

Change Material

The paper reports the thermal performance of a nanofluid (MCNT/water) charged heat pipe with phase change material (PCM) as energy storage material (ESM) for electronic cooling. The adiabatic section of heat pipe is covered by the PCM stored in a container made of acrylic material. Here, paraffin is used as PCM. PCM can absorb and release thermal energy depending upon the fluctuations in the heating load. Tests are conducted to obtain the temperature distributions in PCM during charge/discharge processes. Present study utilizes two different ESM (water and paraffin), different fan speeds and heating powers in the PCM cooling module. The cooling module with heat pipe and paraffin as ESM found to save higher fan power consumption compared to the cooling module that utilities only a heat pipe.

Download Full-text

A Study on Appropriate Temperature of Phase Change Material applicable to Double Skin Facade System for Heating Energy Load Reduction

International Journal of Smart Home ◽

10.14257/ijsh.2014.8.6.01 ◽

2014 ◽

Vol 8 (6) ◽

pp. 1-12 ◽

Cited By ~ 1

Author(s):

Ri Ryu ◽

Jangjoo Seo ◽

Yongseong Kim

Keyword(s):

Phase Change ◽

Phase Change Material ◽

Load Reduction ◽

Double Skin ◽

Change Material

Download Full-text

Phase Change Material Sandwich Panels for Managing Solar Gain in Buildings

Journal of Solar Energy Engineering ◽

10.1115/1.3197839 ◽

2009 ◽

Vol 131 (4) ◽

Cited By ~ 28

Author(s):

Yeliz Konuklu ◽

Halime Ö. Paksoy

Keyword(s):

Phase Change ◽

Phase Change Material ◽

Mediterranean Climate ◽

Sandwich Panel ◽

Melting Points ◽

Average Temperature ◽

Heating And Cooling ◽

Heating Load ◽

Cooling Loads ◽

Change Material

In this study, a phase change material (PCM) sandwich panel was developed and tested to evaluate the resulting decrease in heating and cooling loads of a test cabin in Adana, Turkey, where Mediterranean climate prevails. The panel was formed by a macropackage of microencapsulated PCM layer together with an insulation panel. Two different PCMs, with melting points 26°C and 23°C, were used in the panel. Temperature distribution in the cabin was measured for four different cases. In summer, the maximum average temperature reduction achieved in the cabin was 2.5°C when only the PCM was used. This corresponded to a summer cooling load reduction of 7%. In winter, the maximum average temperature increase achieved in the cabin was 2.2°C with the PCM sandwich panel. The winter heating load was decreased by 17%. Energies conserved in cooling and heating were calculated as 186 kWh/year and 206 kWh/year, respectively.

Download Full-text

The Effects of Thermal Mass and Phase Change Material on a Buildings’ Thermal Load

ASME 2009 3rd International Conference on Energy Sustainability, Volume 2 ◽

10.1115/es2009-90367 ◽

2009 ◽

Author(s):

Robert B. Gilbert

Keyword(s):

Phase Change ◽

Phase Change Material ◽

Thermal Load ◽

Thermal Mass ◽

Load Reduction ◽

Difference Model ◽

Maximum Reduction ◽

Material Equations ◽

Change Material ◽

Sinusoidal Function

A finite-difference model is used to simulate the effects of thermal mass and phase change material on thermal transmission through a building’s envelope wall. The exterior temperature is simulated by a sinusoidal function. The inside temperature is held constant. A comparison is given between the effects of thermal mass and phase change material. The maximum reduction in thermal load and required conditions is given for both thermal mass and phase change material. Equations are given for the maximum thermal load reduction as a function of the inside and outside temperature. Equations are also given which treat the thermal mass as a lumped capacitance and the expected error as a function of the amount of thermal mass. The conditions under which the addition of thermal mass and/or phase change material will result in a reduction of thermal load is given.

Download Full-text