Abstract
The proportion of electricity used for civil buildings is increasing, which intensifies the imbalance between the demand side and supply side of the grids and leads to a large decrement in grid efficiency and large energy losses. The phase change material (PCM) can be used to store numerous heat or cold for heating, ventilation, and air-conditioning (HVAC) systems for its phase change temperature range suitable for maintaining comfortable building thermal environment. Utilizing PCM for HVAC is an important way to mitigate fluctuations in the power consumption of buildings. This paper proposes a new type of air-conditioning duct combined with PCM. The demand shift effects of the PCM integrated air-conditioning duct is studied through experiments. The PCM material ingredients are designed according to the required phase change temperature range. The feasibility of PCM application in HVAC ducts is verified. The results show that air-conditioning duct combined with PCM can keep the indoor temperature in a comfortable range during the power peak load after shutting down chiller.
Highlights
Nowadays, the electricity consumption of civil buildings in the large cities of China accounts for nearly 40% [1]
The results show that air-conditioning duct combined with phase change material (PCM) can keep the indoor temperature in a comfortable range during the power peak load after shutting down chiller
The experiment results show the air-conditioning system equipped with PCM duct can effectively reduce the HVAC demands while maintain the room air temperature in the comfortable range for about 3 hours during the peak load period, which shows that the PCM duct is an effective way to achieve electricity demand shift while keeping the indoor thermal environment comfortable
Summary
The electricity consumption of civil buildings in the large cities of China accounts for nearly 40% [1]. With the increment of people's requirements for better living conditions, the demand for the high level thermal comfort of the indoor environment is increasingly getting higher, which causes the rapid increase of the energy consumption for the air conditioning in buildings. This situation aggravates the huge difference between peak and off-peak loads of electric grid and has brought about a series of problems, such as high investment cost of grid and power plant, low running efficiency during off-peak period, curtailment of renewable energy like wind and solar power, etc. The effect of the PCM duct on the indoor temperature is verified by experiments and the possibility of the PCM air-conditioning duct to reduce the air conditioning load at the electricity peak time is verified
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IOP Conference Series: Earth and Environmental Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
