The class experiment that day was to show how heating a container of water would bring air bubbling to the surface.
那天的课堂实验是为了展示加热一个盛水的容器会如何让空气冒泡到表面。
Surface water heat pumps (SWHPs) are energy-efficient devices for heating and cooling that use surface water as a heat source and sink.
水源热泵是一种利用地下浅层水资源(地表水或地下水)，既可供暖又可制冷的高效节能热泵系统。
It is found that the floor surface temperature variety exponentially with time after the change of water condition, and the heat lag in the heating period is about half of that in cooling period.
发现供水状态变化后，地板表面温度随时间呈指数变化，升温期的稳定时间约为降温期的一半。
Piping temperature sensor is used for real-time detection solar water heating pipes surface temperature, general installation in the cold water and energy.
管道温度传感器是用来实时检测太阳能热水管道表面的温度，一般安装在太阳能上下水管最阴冷的位置。
The paper deals with endanger of scaling on heating surface of boiler and importance of boiler water treatment.
论述了锅炉受热面结垢的危害及水质管理工作的重要性。
By replacing natural circulation with ejecting circulation, the circulating water in each loop can be increased and match with the heat load of related heating surface.
将热水锅炉的水循环由自然循环改为引射循环，强制提高回路的循环水量，使各回路的循环水量分布与其受热面的热负荷相匹配。
Our newly marketed "fluid heat transfer system with sewage or surface water as the source" can be widely used for heating cooling public civil buildings such as shops, hotels, factories houses.
公司目前推出的“流道式污水与地表水源热泵系统”可广泛用于商场、宾馆、厂房、住宅等公共与民用建筑的冬季采暖与夏季制冷。
Since the header on the evaporating heating surface adopts pre-separation structure, the effectiveness and speed of water-steam separation in the drum are improved.
同时，锅炉的蒸发受热面上集箱采用预分离结构，提高了汽包的分离效果和分离速度。
Some problems are ignored in the design of terrestrial surface radiation heating using low warm water. So the paper presents the corresponding technical measures and schemes to solve these problems.
针对低温热水地面辐射供暖设计中容易忽视或规范中无明确规定的问题提出相应的技术措施和解决方案。
Surface water, such as river or lake, and urban sewage are cooling and heating resources of heat pump systems, which are considerable and spectacular in amount.
江河、湖泊等地表水和城市污水是两类数量巨大、极引人注目的水源热泵冷热源。
Surface water, such as river or lake, and urban sewage are cooling and heating resources of heat pump systems, which are considerable and spectacular in amount.
江河、湖泊等地表水和城市污水是两类数量巨大、极引人注目的水源热泵冷热源。
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