OPERATION ANALYSIS OF THE AIR-SOURCE HEAT PUMP USING TRNSYS SIMULATION TOOL

Mokslas Lietuvos Ateitis Pub Date : 2021-09-27 DOI:10.3846/mla.2021.15266

Gabrielė Daugirdaitė, Giedrė Streckienė, Tomas Kropas

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Abstract

In order to achieve ambitious goals for energy efficiency and requirements for near zero energy buildings, various technological solutions enabling the use of renewable energy are proposed and applied. One such rapidly spreading technology is heat pumps. However, the use of air-to-water heat pumps in countries where the cold season is cold and humid has unfavourable conditions for the operation of this equipment during the heating season. As a result, the performance efficiency of the equipment decreases. This article presents the simulation results of an air-to-water heat pump operation in Lithuania using the TRNSYS modelling tool; its nominal heating capacity is 6.55 kW. The model was calibrated using real data obtained at Vilnius Gediminas Technical University when measurements were performed under heat pump freezing conditions. The seasonal performance factor of the heat pump heating mode was determined during the calculation. Parametric analysis of the model was also performed, when sensitivity of the model to the initial climatic data was observed. Comparable results are obtained for Vilnius, Prague and London.

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利用trnsys仿真工具对空气源热泵进行运行分析

为了实现能源效率的宏伟目标和接近零能耗建筑的要求，提出并应用了各种技术解决方案，使可再生能源的使用成为可能。其中一项迅速普及的技术就是热泵。然而，在寒冷季节寒冷潮湿的国家使用空气-水热泵对该设备在采暖季节的运行不利。因此，设备的性能效率降低。本文介绍了立陶宛使用TRNSYS建模工具对空气-水热泵运行的模拟结果;其标称供热能力为6.55千瓦。该模型使用维尔纽斯Gediminas技术大学在热泵冷冻条件下进行测量时获得的真实数据进行校准。在计算过程中确定了热泵采暖方式的季节性能因子。当观测到模型对初始气候数据的敏感性时，还对模型进行了参数分析。维尔纽斯、布拉格和伦敦也得到了类似的结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Mokslas Lietuvos Ateitis

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