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Heating mode design scheme for buildings with large and high space-1

time：2023-05-08
hits：1774次
source：正弘奧能

With the rapid development of China's economy in the new era, people's requirements for architectural functions have gradually changed from the original emphasis on economic applicability to the pursuit of quality. There are more and more tall space buildings, such as large stadiums and exhibition halls, which give people a feeling of ease and ease and atmosphere. At the same time, the popularity of tall space has put forward higher requirements for the professional design and installation of HVAC.Designers should provide the heating design scheme suitable for the building itself according to the different characteristics of the project.


	 


	Tall space building, as the name implies is the high storey, large space.Tall space building has its own architectural characteristics, refers to the height of more than 5 meters, volume of more than 10,000 cubic meters of the building.Tall buildings are mainly used in civil public buildings and industrial buildings, among which civil buildings are mainly commercial buildings, cinemas, stadiums, concert halls and exhibition halls, and industrial buildings are mainly determined by industrial technology height.The function of tall space is often more complex for HVAC professional, the main concern is the thermal load characteristics of tall space buildings.Because the tall space storey is relatively high, the space is relatively wide, the chimney effect is obvious, resulting in the formation of a particularly large vertical direction of the temperature gradient, the heat concentration to the ceiling gathered, and the work area is not up to the design requirements, in addition to the large general area of the tall space, the internal and external heat load difference is also large, such as unreasonable design, will cause the indoor temperature field temperature distribution is not uniform,It affects the comfort level.


	 


	<img src="http://m.sylyby.cn/Uploads/image/20230509/20230509154047_14685.jpg" alt="" /> 


	 


	There are a variety of heating methods for tall space. The following is an analysis of the characteristics of large space heating methods which are more efficient and environmentally friendly and green and low-carbon in the current design, so as to help the construction units and design researchers in the selection of heating schemes.


	 


	Infrared gas radiant heating


	 


	(1) Infrared gas radiation heating is the use of natural gas, liquefied petroleum gas and other combustible gases, through the special combustion device - generator combustion and radiation of various wavelengths of infrared heating.


	 


	(2) Infrared gas radiation heating can be used in industrial plants, hangars, railway locomotive maintenance warehouses, large stadiums, exhibition halls and other tall buildings.Due to the high surface temperature of the radiator, if the installation height is too low, the radiation intensity felt by the human body will exceed the requirements for human comfort. Therefore, Article 5.6.3 of the Design Code for Heating, Ventilation and Air Conditioning of Civil Buildings (GB50736-2014) provides that the installation height of the gas infrared radiator should not be lower than 3m.


	 


	(3) Infrared gas radiation heating is a way for heating tall buildings, especially suitable for intermittent heating buildings, and there is no danger of freezing when stopped.


	 


	(4) In tall space buildings, the use of infrared gas radiation heating, especially the use of Beijing Leadway Power&nbsp;Co., Ltd. to promote the "infrared gas radiation heating equipment", heating generator installed outdoors, will not improve the fire level in the building, can avoid fire risk.


	 


	Combined with the characteristics of tall space buildings, infrared gas radiation heating is the best and most reasonable heating scheme.And compared with traditional heating, infrared radiation heating equipment can greatly save the operation cost of tall space buildings.


	 


	The gas infrared radiation equipment promoted and sold by Beijing Leadway Power&nbsp;Co., Ltd. does not need to install external combustion equipment. The independent heater is generally installed in the upper part of the building heating space, which does not occupy the building space.Radiant heat directly radiates downward, the ground can also save some heat, indoor air temperature gradient is small, small heat loss, reduce heat consumption under the premise of ensuring comfort, to achieve the purpose of energy saving.Quiet operation, no convective air, avoid the phenomenon of ash in the industrial plant, can improve the health conditions of the heating space.Indoor heating speed is fast, heat distribution is uniform, body feeling is comfortable and soft.In addition, considering the poor sealing of many factory Windows, the indoor air temperature of gas radiant heating is 2 ~ 3℃ lower than that of convective heating, and the heat consumption is small, and the indoor and outdoor temperature difference is small, so the cold air permeability is also small.

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Heating mode design scheme for buildings with large and high space-1