Results 11 to 20 of about 11,564 (258)

Multi-Objective Optimization Research on the Integration of Renewable Energy HVAC Systems Based on TRNSYS

open access: yesBuildings, 2023
Well-designed passive buildings can drastically reduce building energy consumption, and optimal design of air conditioning systems is the key to achieving low operating energy consumption in near-zero energy buildings.
Qiang Si   +4 more
doaj   +1 more source

Study on the Performance of Multiple Sources and Multiple Uses Heat Pump System in Three Different Cities

open access: yesEnergies, 2020
Various efforts have been made worldwide to reduce energy use for heating, ventilation, and air-conditioning (HVAC) systems and lower carbon dioxide (CO2) emissions. Research and development are essential to ensuring the efficient use of renewable energy
Hongkyo Kim   +3 more
doaj   +1 more source

Comparative Study Among Hybrid Ground Source Heat Pump System, Complete Ground Source Heat Pump and Conventional HVAC System [PDF]

open access: yesVolume 4: Energy Systems Analysis, Thermodynamics and Sustainability; Combustion Science and Engineering; Nanoengineering for Energy, Parts A and B, 2011
In this paper, a hotel with hybrid geothermal heat pump system (HyGSHP) in the Pensacola is selected and simulated by the transient simulation software package TRNSYS [1]. To verify the simulation results, the validations are conducted by using the monthly average entering water temperature, monthly facility consumption data, and etc.
Zhu, Jiang, Tao, Yong X.
openaire   +1 more source

Performance Simulation of Air-ground Hybrid Source Heat Pump Systems in Northern China

open access: yesZhileng xuebao, 2021
The air-ground hybrid source heat pump system can realize indirect air source heat pump mode and heat compensation mode through an air-water heat exchanger, which could compensate for the difference between heat extraction and heat injection to the soil.
Wang Wentao, Li Xianting, Hu Pingfang
doaj  

A wet-bulb temperature-based control method for controlling the heat balance of the ground soil of a hybrid ground-source heat pump system

open access: yesAdvances in Mechanical Engineering, 2017
Hybrid ground-source heat pump system has been widely used for mitigating the heat accumulation problem of conventional ground-source heat pump systems.
Hang Wan   +4 more
doaj   +1 more source

The Solar-Assisted Vertical Ground Source Heat Pump System in Cold Climates—A Case Study

open access: yesProceedings, 2020
In this paper, experimental studies were performed for a solar ground source heat pump system (SGSHPS) with a vertical ground heat exchanger (VGHE). The experiment was operated during the summer in 2018. The heat from the solar collector was monitored by
Piotr Rynkowski
doaj   +1 more source

Study on Storage Conditions and Suitability Zoning of Shallow Floor Energy in Nanchang City

open access: yesGeofluids, 2021
In the context of China’s carbon summit strategy, as renewable clean energy, the development and utilization of shallow geothermal energy has broad prospects.
Hua Zhang   +5 more
doaj   +1 more source

Selection and techno-economic analysis of hybrid ground source heat pumps used in karst regions

open access: yesScience Progress, 2020
In order to take advantage of different forms of heat pumps and to mitigate thermal imbalance underground caused by long-term operation of ground source heat pumps, hybrid ground source heat pump systems have received an increasing attention.
Weisong Zhou   +5 more
doaj   +1 more source

Assessment of two-level heat pump installations’ power efficiency for heat supply systems

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2015
The problem of energy saving becomes one of the most important in power engineering. It is caused by exhaustion of world reserves in hydrocarbon fuel, such as gas, oil and coal representing sources of traditional heat supply.
Алла Євсеївна Денисова   +1 more
doaj   +7 more sources

Coefficient of Performance Stabilisation in Ground Source Heat Pump Systems

open access: yesJournal of Sustainable Development of Energy, Water and Environment Systems, 2017
The number of installations with ground source heat pumps is steadily increasing. As they involve high investment costs, they require deliberate action and analysis.
Jerzy Wołoszyn, Andrzej Gołaś
doaj   +1 more source

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