Advances in frosting suppression air source heat pump device: definition and classification

IF 7.1 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Energy and Buildings Pub Date : 2025-09-15 DOI:10.1016/j.enbuild.2025.116455

Yao Lin , Wei Wang , Jianfei Luo , Shiquan Wang , Wenzhe Wei , Qing Luo , Yuying Sun , Chuanmin Dai

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引用次数: 0

Abstract

It has been known that space heating air source heat pumps (ASHPs) are energy-saving, low-carbon, and popular worldwide. The combination of low-temperature and high humidity can lead to frosting formation on the outdoor coil surface, resulting in a low operating coefficient of performance. However, there is no definition and classification of frosting suppression ASHP devices, resulting in a slow development of frosting suppression technology. Therefore, this paper defines and classifies frosting suppression ASHP devices to address the gap. Firstly, several parameters to describe the frosting suppression performance of the ASHP device were defined. Secondly, the experimental platform, unit, and operating conditions were set up in detail. Thirdly, the definition and classification for frosting suppression ASHP devices were established. It is shown that when the output heating capacity decay rate during frosting (Ɛ_f) reaches 5 %, if the corresponding time (t_f) ≥ 68 min, is a frosting suppression ASHP device. Furthermore, if t_f > 96 min, is a first level frosting suppression performance; if 68 ≤ t_f ≤ 96 min, is a second level. At the same time, the frosting suppression device can improve energy efficiency by up to 78 %. The result could offer practical guidance for equipment manufacturers to enhance the frosting suppression performance, and lay a foundation for developing Chinese standards for frosting suppression ASHP devices.

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抑霜空气源热泵装置的研究进展：定义与分类

众所周知，空间供暖空气源热泵（ASHPs）节能、低碳，在世界范围内广受欢迎。低温和高湿的结合会导致室外盘管表面形成结霜，导致性能运行系数低。然而，由于对抑霜空气源热泵设备没有明确的定义和分类，导致抑霜技术发展缓慢。因此，本文对抑霜源热泵设备进行了定义和分类，以解决这一空白。首先，定义了描述空气源热泵抑制结霜性能的几个参数。其次，详细搭建了实验平台、实验单元和操作条件。第三，建立了抑霜空气源热泵装置的定义和分类。结果表明，当结霜过程中输出热容衰减率（Ɛf）达到5%时，如果对应的时间(tf)≥68 min，则为抑霜空气源热泵装置。并且，当f >； 96 min时，为一级抑霜性能；若68≤tf≤96 min，则为二级。同时，该抑霜装置可提高能源效率高达78%。研究结果可为设备制造商提高抑霜性能提供实用指导，并为制定我国抑霜空气源热泵设备标准奠定基础。

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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来源期刊

Energy and Buildings 工程技术-工程：土木

CiteScore

12.70

自引率

11.90%

发文量

863

审稿时长

38 days

期刊介绍： An international journal devoted to investigations of energy use and efficiency in buildings Energy and Buildings is an international journal publishing articles with explicit links to energy use in buildings. The aim is to present new research results, and new proven practice aimed at reducing the energy needs of a building and improving indoor environment quality.