scholarly journals Effects of latent heat storage and controls on stability and performance of a solar assisted heat pump system for domestic hot water production

Solar Energy ◽  
2017 ◽  
Vol 150 ◽  
pp. 394-407 ◽  
Author(s):  
W. Youssef ◽  
Y.T. Ge ◽  
S.A. Tassou
Keyword(s):  
Latent Heat ◽  
Heat Pump ◽  
Heat Storage ◽  
Hot Water ◽  
Water Production ◽  
Latent Heat Storage ◽  
Pump System ◽  
Heat Pump System ◽  
Domestic Hot Water ◽  
And Performance

Effective Utilization System of Unused Energy in Aquarium

2003 ◽  
Author(s):  
Satoru Okamoto
Keyword(s):  
Heat Source ◽  
Electric Power ◽  
Latent Heat ◽  
Heat Pump ◽  
Heat Storage ◽  
Coefficient Of Performance ◽  
Latent Heat Storage ◽  
Pump System ◽  
Heat Pump System ◽  
Power Load

This paper introduces a heat pump system with a latent heat storage utilization seawater installed in an aquarium. For heating purpose such as air conditioning in order to maintain the indoor conditions at constant temperature and constant relative humidity, and cooling water supply to the fish tank in the aquarium, heat from seawater is collected as the heat source for the heat pump system. With regard to the heat pump system using low-temperature unutilized heat source, development is introduced on a heat source load responsive heat pump system, with combines a load variation responsive heat pump utilizing seawater with a latent heat (ice plus water slurry) storage system using nighttime electric power serving for electric power load leveling. The experimental COP (Coefficient of performance) of the proposed heat exchanger from seawater and latent heat storage cooling assisted heat pump system will be shown in detail.

scholarly journals Experimental Study on Automatic Switching of Solar Coupled Groundwater Source Heat Pump System

2021 ◽  
Vol 2095 (1) ◽  
pp. 012077
Author(s):  
Xiaoming Zhang ◽  
Qiang Wang ◽  
Qiujin Sun ◽  
Mingyu Shao
Keyword(s):  
Energy Efficiency ◽  
Heat Pump ◽  
Average Energy ◽  
Energy System ◽  
Hot Water ◽  
Efficiency Ratio ◽  
Pump System ◽  
Heat Pump System ◽  
Domestic Hot Water ◽  
Groundwater Source

Abstract There have been few practical applications of solar coupled groundwater source heat pump (GWHP) systems in large public buildings, and data on this technology are scarce. A solar coupled GWHP system was investigated in this study. The system uses an underground water source heat pump system for heating in winter, cooling in summer, and providing part of the domestic hot water, and it also uses a solar energy system to prepare domestic hot water. These two types of energy are complementary. The system was tested throughout the cooling season. This experiment ran from May 10, 2021, to September 10, 2021. The results show that the system can guarantee the indoor design temperature and the supply of domestic hot water. The solar water heating system operated for 1233 min in the summer; hot water (2334 m3) was prepared. During the summer, the average energy efficiency ratio of the GWHP unit was approximately 4.88. The energy efficiency ratio of the entire system was approximately 3.34. Such projects can play a key role in demonstrating this type of system.

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