The Key Technical Analysis on the Hot Dry Rock in Northeast Cold in China

2011 ◽  
Vol 71-78 ◽  
pp. 1268-1272
Author(s):  
Jian Bin Zhao ◽  
Xiao Yan Feng ◽  
Ke Qi Yan ◽  
Hui Guo
Keyword(s):  
Heat Supply ◽  
Fossil Fuels ◽  
Pipe Material ◽  
Ground Source Heat Pump ◽  
Huge Number ◽  
Key Technology ◽  
Hot Dry Rock ◽  
Ground Source ◽  
Cold Area ◽  
Thermal Conductivity Of Rock

Northeast heat supply is an eternal demand, it would cost tens of thousand of moneys for heat supply, on the other hand, the resource of coal and fossil fuels is non-renewable source of energy, in the future it will be consumed, so it is still a serious problem to solve the winter heat supply. At the same time, the hot dry rock has three essential factors including a huge number, renewable and not polluting the environment, which will open up new ways on heat supply in cold area. Based on its advantages the paper will design a heated system more effective than the technology of shallow ground source heat pump, meanwhile analysis the key technology during exploiting the hot dry rock progress, then the thermal conductivity of rock under high temperature and high pressure and the heat transfer ability between rock and water as well as pipe material and insulation technology, all of which will realize the key technology about the dry-heat rock heating. In conclusion, if the key technology on heated system would be settled, it will bring breakthrough about using the hot dry rock on heated supply in cold areas.

scholarly journals Sensitivity analysis using simulations for a ground source heat pump – implementation on a solar passive house

2019 ◽  
Vol 111 ◽  
pp. 01070
Author(s):  
Gheorghe Ilisei ◽  
Tiberiu Catalina ◽  
Robert Gavriliuc
Keyword(s):  
Sensitivity Analysis ◽  
Heat Pump ◽  
Fossil Fuels ◽  
Electricity Consumption ◽  
Heat Pumps ◽  
Ground Source Heat Pump ◽  
Passive House ◽  
Modeling Tools ◽  
Ground Source Heat Pumps ◽  
Ground Source

Having in sight the need for a strong reduction in CO2 emissions and the fluctuation of the price of fossil fuels, the ground source resources alongside with the ground source heat pumps are becoming more and more widespread for meeting the heating/cooling demand of several types of buildings. This article targets to develop the thermal modelling of borehole heat storage systems. Trying to emphasize some certain advantages of a GSHP (ground source heat pump) with vertical boreholes, a case study analysing a residential solar passive house is presented. The numerical results are produced using different modelling software like DesignBuilder, EED (Earth Energy Designer) and a sizing method for the length of the boreholes (ASHRAE method). The idea of sizing the length of boreholes (main design parameter and good index in estimating the system’s cost) using two different methods shows the reliability of this modelling tool. The study shows that borehole’s length of a GSHP system can trigger a difference in electricity consumption up to 22%. Moreover, this sensitivity analysis aims to prove that the design of the whole system can be done beforehand just using modeling tools, without performing tests in-situ.

Parameter optimization of passive heat supply tower of ground source heat pump based on NSGA-II

Solar Energy ◽  
2019 ◽  
Vol 190 ◽  
pp. 453-464 ◽  
Author(s):  
Yanli Song ◽  
Mingyin Zou ◽  
Xin Chen ◽  
Junyu Deng ◽  
Tao Du
Keyword(s):  
Heat Pump ◽  
Parameter Optimization ◽  
Heat Supply ◽  
Ground Source Heat Pump ◽  
Nsga Ii ◽  
Ground Source

Numerical Simulations of a Ground Source Heat Pump System With Pile Heat Exchangers

2014 ◽  
Vol 7 (1) ◽  
Author(s):  
Masahito Oguma ◽  
Takeshi Matsumoto ◽  
Takao Kakizaki
Keyword(s):  
Numerical Simulation ◽  
Numerical Simulations ◽  
Heat Pump ◽  
Heat Exchangers ◽  
Heat Supply ◽  
Ground Surface ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source

Feasibility of a ground source heat pump (GSHP) system with pile heat exchangers for use in houses is evaluated through a numerical simulation. This GSHP system differs from ordinary borehole-type GSHP systems because short foundation piles installed at close intervals are used as heat exchangers. It is shown that the annual heat supply provided by this GSHP system is able to satisfy the demand of a house due to the air-source exchange at ground surface.

Experimental Study on a Ground Source Heat Pump System in Cold Area

2011 ◽  
Vol 71-78 ◽  
pp. 2566-2571 ◽  
Author(s):  
Yi Liu ◽  
Ya Xuan Wang ◽  
Ya Ning Zhang
Keyword(s):  
Experimental Study ◽  
Heat Pump ◽  
Operation Time ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Cold Area

Experiment of a ground source heat pump system in cold area is studied in this paper. The results indicate that when the operation time increases to 100 hours, COPHP (COP of the heat pump) and COPSYS (COP of the system) decrease from 3.54 and 2.63 to 2.53 and 1.92, respectively. The average values of COPHP and COPSYS are 3.1 and 2.3, respectively. COPHP and COPSYS with 2 compressors at work are 11% and 12.2% higher than COPHP and COPSYS with 4 compressors at work, respectively. The average COPSYS with inverters is 6.42% higher than the COPSYS without inverters.

Discussion of Ground Source Heat Pump System Heat Balance in Severe Cold Area

2014 ◽  
Vol 507 ◽  
pp. 475-479
Author(s):  
Xin Dai ◽  
Lu Liu
Keyword(s):  
Heat Pump ◽  
Heat Balance ◽  
Comprehensive Analysis ◽  
Ground Source Heat Pump ◽  
Soil Factors ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Cold Area ◽  
Thermal Imbalance

This template comprehensive analysis of the causes of soil heat balance, heat balance of soil caused by the results, heat balance of soil factors influence, several domestic thermal imbalance of soil heat balance and common measures to solve the problem, for the future of the soil source heat pump system design for the constructive suggestion.

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