EVALUATION THE PERFORMANCE OF LAKE WATER USED AS HEAT SOURCE FOR HEAT PUMP SYSTEM IN A TYPICAL JAPANESE RESIDENT BUILDING

2017 ◽  
Vol 12 (31) ◽  
Author(s):  
Liwei Wen
Keyword(s):  
Heat Source ◽  
Heat Pump ◽  
Lake Water ◽  
Pump System ◽  
Heat Pump System

scholarly journals Study of Heat-source-Tower Heat Pump System Efficiency

2015 ◽  
Vol 121 ◽  
pp. 915-921 ◽  
Author(s):  
Jianlin Cheng ◽  
Nianpin Li ◽  
Kuan Wang
Keyword(s):  
Heat Source ◽  
Heat Pump ◽  
System Efficiency ◽  
Pump System ◽  
Heat Pump System

Analysis of Soil as Heat Source for Heat Pump System

1966 ◽  
Vol 9 (6) ◽  
pp. 0846-0848
Author(s):  
Myron G. Cropsey
Keyword(s):  
Heat Source ◽  
Heat Pump ◽  
Pump System ◽  
Heat Pump System

Air-water heat pump applied as water boiler in single-family house, coefficient of performance analysis under the real conditions

2018 ◽  
Vol 3 (2) ◽  
pp. 58-61
Author(s):  
Agnieszka Lisowska-Lis ◽  
Robert Leszczyński
Keyword(s):  
Heat Source ◽  
Heat Pump ◽  
Air Temperature ◽  
Electrical Energy ◽  
Coefficient Of Performance ◽  
Single Family ◽  
Pump System ◽  
Heat Pump System ◽  
System Temperature ◽  
Family House

The subject of the research was an air-water heat pump, model PCUW 2.5kW from HEWALEX, installed in a single-family house. The pump is only used for heating water. The research was carried out from 25-08-2017 to 18-09-2017 in the village of Zborowice, in Malopolska region, Poland. The data were recorded from the heat pump system: temperature of the lower heat source (external air), temperature of the upper heat source (water temperature in the tank), time of heat pump was calculated during the analysed cycle of work and electrical energy consumption. The Coefficient Of Performance (COP) of the analysed air-water heat pump was determined. The analysis of the results was carried out using the MATLAB and EXCEL statistical tools. The correlation between COP coefficient and external air temperature is strong: 0.67.

Determination of Heat Transfer Characteristics of Solar Thermal Collectors as Heat Source for a Residential Heat Pump

2016 ◽  
Vol 138 (4) ◽  
Author(s):  
Maarten G. Sourbron ◽  
Nesrin Ozalp
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Low Temperature ◽  
Heat Source ◽  
Heat Pump ◽  
Solar Collector ◽  
Heat Transfer Characteristics ◽  
Pump System ◽  
Heat Pump System ◽  
Temperature Heat

With reducing energy demand and required installed mechanical system power of modern residences, alternate heat pump system configurations with a possible increased economic viability emerge. Against this background, this paper presents a numerically examined energy feasibility study of a solar driven heat pump system for a low energy residence in a moderate climate, where a covered flat plate solar collector served as the sole low temperature heat source. A parametric study on the ambient-to-solarfluid heat transfer coefficient was conducted to determine the required solar collector heat transfer characteristics in this system setup. Moreover, solar collector area and storage tank volume were varied to investigate their impact on the system performance. A new performance indicator “availability” was defined to assess the contribution of the solar collector as low temperature energy source of the heat pump. Results showed that the use of a solar collector as low temperature heat source was feasible if its heat transfer rate (UA-value) was 200 W/K or higher. Achieving this value with a realistic solar collector area (A-value) required an increase of the overall ambient-to-solarfluid heat transfer coefficient (U-value) with a factor 6–8 compared to the base case with heat exchange between covered solar collector and ambient.

scholarly journals Performance Studies on a Novel Solar PV/T-air Dual Heat Source Heat Pump System

2015 ◽  
Vol 121 ◽  
pp. 771-778 ◽  
Author(s):  
Gang Wang ◽  
Zhenhua Quan ◽  
Yaohua Zhao ◽  
Chenming Sun ◽  
Jiannan Tong
Keyword(s):  
Heat Source ◽  
Heat Pump ◽  
Performance Studies ◽  
Solar Pv ◽  
Pump System ◽  
Heat Pump System

Economical and Environmental Aspects of Heat Pump System Utilizing Unused Energy in Aquarium

2004 ◽  
Author(s):  
Satoru Okamoto
Keyword(s):  
Heat Source ◽  
Electric Power ◽  
Latent Heat ◽  
Heat Pump ◽  
Storage System ◽  
Latent Heat Storage ◽  
Pump System ◽  
Heat Pump System ◽  
Power Load ◽  
Load Leveling

This paper introduces a heat pump system with a latent heat storage utilizing seawater installed in an aquarium. Heat from the seawater is collected and used as the heat source for the heat pump system. This maintains the indoor conditions at constant temperature and relative humidity. 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 desired outcome would be to show that the costs of generating heat energy with the seawater-source heat pump are significantly less than those with the air-source heat pump and the oil-fired system. Additionally, the CO2 emissions for the seawater-source heat pump compare favourably as they maybe less than those for the other conventional assumed systems described.

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