Application of Heat Pump Energy-Saving Control Temperature Technology in Large Warehouse on Preservation Quality of Rice

2013 ◽  
Vol 724-725 ◽  
pp. 889-892
Author(s):  
Li Nan Xu ◽  
Xi Hong Li ◽  
Yuan Yuan Chen ◽  
Xia Liu
Keyword(s):  
Biological Activity ◽  
Moisture Content ◽  
Heat Pump ◽  
Pump Energy ◽  
Ground Source Heat Pump ◽  
Control Temperature ◽  
Ground Source ◽  
Energy Saving Control ◽  
Total Bacteria

Effect of ground source heat pump (GSHP) on control large warehouse temperature and the quality of grain during the storage in it was investigated. GSHP exhibited a better control in temperature in warehouse and grain heap. Compared with traditional warehouse, the temperature in warehouse installed GSHP and grain heap in which were all lower than 20°C in a whole year. The parameters of biological activity of grain were determined. At the end of storage, the moisture content of rice in the test warehouse was 0.39% higher than control and the total bacteria counts of rice were one time higher in the control warehouse than that in the test warehouse.

Hydrothermal Enhancement of Horizontal Ground Source Heat Pump

2020 ◽  
Author(s):  
Anthony A. DiCarlo
Keyword(s):  
Moisture Content ◽  
Heat Pump ◽  
Ground Source Heat Pump ◽  
Dynamics Model ◽  
Computational Fluid Dynamics Model ◽  
Winter Conditions ◽  
Ground Source ◽  
Thermal Phenomenon ◽  
Novel Method ◽  
Porous Soil

Abstract This study investigates a novel method for controlling the thermal conductivity of soil to enhance the performance of a horizontal ground source heat pump (GSHP). The method calls for irrigation lines to be buried in parallel with the ground pipes for the distribution of water in the area around the pipes thereby contributing to and controlling the soil’s moisture content. The controlled distribution of water within the porous soil promotes heat paths improving the performance of the GSHP system based on the transient seasonal spatial-temporal conditions. A computational fluid dynamics model of the porous soil is developed to simulate the hydro-thermal phenomenon over a short duration (40 hours) during winter conditions. The model is employed to investigate the heat transfer rate between the ground and pipes when the soil’s moisture content is modified and how this affects performance.

scholarly journals Analysis and Discussion of Baoji “Shigu • Tian Xi Tai”, “Shigu • Sun City” Ground Source Heat Pump Energy Station System

2019 ◽  
Vol 111 ◽  
pp. 01065
Author(s):  
LI Ji ◽  
CHEN Bin ◽  
LI Jintang ◽  
CHENG Chonghua ◽  
GAO Zhenwu ◽  
...  
Keyword(s):  
Heat Pump ◽  
Economic Model ◽  
Energy Supply ◽  
Pump Energy ◽  
Green Building ◽  
Ground Source Heat Pump ◽  
Construction Process ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source

Baoji “Shigu • Tian Xi Tai”, “Shigu • Sun City” ground source heat pump energy station system is an important energy supply project in Shigu. In this paper, we systematically introduce the design of green building and ground-source heat pump system, points of construction process, pre-cooling station technology, EMC economic model in detail. In addition, the ground source heat pump system of the project was tested in the field to analyze and evaluate the running performance of the system. We hope our research can provide some reference and help to the practitioners.

Evaluation of Ground Source Heat Pump Energy, Demand, and Greenhouse Potential in Colorado Residential Buildings

2010 ◽  
Author(s):  
Daniel Studer ◽  
Moncef Krarti
Keyword(s):  
Heat Pump ◽  
Energy Demand ◽  
Residential Buildings ◽  
Pump Energy ◽  
Hvac Systems ◽  
Heat Pumps ◽  
Ground Source Heat Pump ◽  
Ground Source Heat Pumps ◽  
Vertical Well ◽  
Ground Source

This paper summarizes the results of a detailed energy analysis carried out for a typical Colorado residence using three different HVAC systems for 10 distinct locations in Colorado. The HVAC systems considered in the analysis include: • 78% efficient furnace with a 13 SEER air conditioner; • Vertical well ground source heat pump with a heating COP of 3.5 and a cooling EER of 17.1; • Slinky ground source heat pump with a heating COP of 3.5 and a cooling EER of 17.1. The results of the analysis indicate that relative to the conventional systems, ground source heat pumps (GSHPs) offer several benefits including lower annual energy costs, electrical peak demand, and carbon emissions. However, GSHPs use more electrical energy use. Specifically, it was found that relative to a 78 AFUE furnace / 13 SEER AC system, in all locations both GSHPs, vertical well and slinky, show on average a 41.2% increase in electricity use, a 10% decrease in energy cost, a 4.5% decrease in CO2 emissions, and a 16.8% average decrease in peak summer electric demand.

Parametric Study of Ground Source Heat Pump System for Hot and Humid Climate

2011 ◽  
Author(s):  
Jiang Zhu ◽  
Yong Tao
Keyword(s):  
Heat Pump ◽  
Pump Energy ◽  
Residential Building ◽  
Simulation Software ◽  
Ground Source Heat Pump ◽  
Humid Climate ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Future Work

The U-tube sizes and varied thermal conductivity with different grout materials are studied based on the benchmark residential building in Hot-humid Pensacola, Florida. In this study, the benchmark building is metered and the data is used to validate the simulation model. And a list of comparative simulation cases with varied parameter value are simulated to study the importance of pipe size and grout to the ground source heat pump energy consumption. The simulation software TRNSYS [1] is employed to fulfill this task. The results show the preliminary energy saving based on varied parameters. Future work needs to be conducted for the cost analysis, include the installation cost from contractor and materials cost.

Energy Efficiency Testing of Ground Source Heat Pump System and Discussion of Fault Diagnosis

2013 ◽  
Vol 805-806 ◽  
pp. 587-590
Author(s):  
Yi Yu ◽  
Yu Yun Li ◽  
Yong Ma ◽  
Xian Fang Hu
Keyword(s):  
Energy Efficiency ◽  
Heat Pump ◽  
Pump Energy ◽  
System Failure ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Process System ◽  
Testing Instruments

In order to improve the scientificity and accuracy of ground source heat pump energy efficiency testing, the paper discusses the principles and methods of energy efficiency testing, the requirements of the testing instruments' selection and installation and the arrangement of measuring points.The paper shows how to diagnosis instruments and process system failure according to the concrete situation on site,and points out the methods of systematic troubleshooting and fault elimination.

Study on the Influence of the Operation Parameters to the Ground Source Heat Pump Energy Efficiency Ratio

2013 ◽  
Vol 448-453 ◽  
pp. 3245-3249
Author(s):  
Wei Zhou ◽  
Xiao Feng Mao ◽  
Chong Meng
Keyword(s):  
Energy Efficiency ◽  
Heat Pump ◽  
Pump Energy ◽  
Measured Data ◽  
Ground Source Heat Pump ◽  
Efficiency Ratio ◽  
Statistical Software ◽  
Independent Variables ◽  
Ground Source ◽  
Operation Parameters

This paper is based on 30 ground source heat pump projects measured data which is comparative analyzed, using SPSS statistical software for modeling and find out several key independent variables that influence the system COP and the linear relationship between them. Verify this model in order to lay a foundation for unified evaluation criterion for the ground source heat pump energy efficiency ratio.

scholarly journals Study on energy efficiency evaluation and influencing factors of ground source thermal energy management system operation

2020 ◽  
Vol 24 (5 Part B) ◽  
pp. 3319-3227
Author(s):  
Chun Fu ◽  
Xiaoxia Zhao
Keyword(s):  
Energy Efficiency ◽  
Heat Pump ◽  
Pump Energy ◽  
Ground Source Heat Pump ◽  
Ground Source ◽  
Energy Efficiency Evaluation ◽  
Set Up ◽  
Feasible Solutions ◽  
Testing Instruments ◽  
The Impact

The paper combines the testing work of ground source heat pump systems, discusses the installation, use methods and test errors of various testing instruments, combines the field test experience, gives the main points of ground source heat pump energy efficiency testing, and according to the problems encountered during the test. The faults with high frequency are analyzed, and the methods of fault diagnosis and troubleshooting are given. This paper uses the ground-source heat pump experimental platform to set up multiple sets of experimental schemes to study the impact of factors such as pipe diameter, single and double U, and flow rate on system energy efficiency. At the same time, it combines engineering cases to ?large flow small temperature difference?, ?imbalance? phenomenon is analyzed, and feasible solutions and suggestions are given. By analyzing the energy efficiency and benefits of actual engineering of multiple ground source heat pump systems, the paper concludes that ground source heat pump systems have a wider application prospect in a certain area of Hubei.

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