我们正在开发一种新型可再生能源系统，可以满足建筑物的多种供暖和制冷需求。该系统由一个水回路组成，地面换热器、一个独特的天空源热泵和用于各种应用的水源热泵与之相连。天空源热泵的室外面板在太阳能和空气源运行时是制冷剂蒸发器，在夜间散热器运行时可以切换为冷凝器。这些运行模式通过每天向地面添加热量或从地面减去热量来恢复土壤温度，从而使地面热交换器紧凑紧凑。一个原型系统在空间供暖、空调和热水供应方面显示出很高的COP可能性。 本文解释了该系统的概念，并描述了一些实验测试结果。引文:ASHRAE论文CD:2014 ASHRAE年会，华盛顿州西雅图

We are developing a novel renewable energy system that can meet multiple heating and cooling demands of a building. This system consists of a water loop to which ground heat exchangers, a unique sky-source heat pump, and water-source heat pumps for various applications are connected. The outdoor panel of the sky-source heat pump is a refrigerant evaporator in the solar-source and air-source operation, and can be switched to a condenser in the nocturnal-radiator operation. These operational modes restore soil temperature either by adding heat to or subtracting heat from the ground on a daily basis, allowing the ground heat exchanger to be closely packed and compact. A prototype system showed high COP possibilities in space heating, air conditioning, and hot water supply. This paper explains the concept of the system and describes some test results of the experiment.