The basic requirements of economic operation of heat pump system: 1, as far as possible the use of high temperature heat source. 2, the actual temperature difference between heat source and heat medium is the lowest. 3, the heat source should meet the following requirements: --- In the highest possible heating temperature to provide the required heat. --- The cost of using the heat source is lower. --- Whether in the chemical or physical, heat exchange equipment does not have a negative impact. --- Heat conditions change, better adaptability. --- Conveying equipment such as fans, pumps and other energy consumption as low as possible. The heat pump system compressor should meet the following requirements: 1, for the air source heat pump, tz = -35 ~ +15 oC and tl ≤ 65oC range should be able to operate normally; compression ratio up to 9, there should be satisfactory efficiency; at the same time , There should not be too high overheating temperature. 2, the inhalation of steam in the superheated and unsaturated state, the compressor is not affected by the quality of inhalation. 3, can withstand the rapid changes in work pressure, does not produce oil foam; oil should be returned to the crankcase with steam, and in the box with immersion heaters. 4, there should be good, reliable over-temperature, over-voltage protection device. Trouble-free operation time in more than 25000h. 5, Larger heat pump, should be equipped with a smooth and without loss of energy mediator. HVAC - Air Conditioning - Online 6, Compressor equipped with the motor, with a flat efficiency curve. Based on the above requirements, put forward the following recommendations: Heating Q = 0.5 ~ 500KW, the use of positive displacement. Heating Q> 500KW, the use of centrifugal. Refrigerant flow control to the use of thermal expansion valve is appropriate, and should be "balanced hole" type, in order to maintain the pressure does not vary with changes in inlet pressure, but in the case of smaller pressure drop the normal operation. Economic judgments For a heat pump system with a certain performance, it is generally considered economical to use it under the following conditions: There is a good source of heat, such as groundwater. The annual running time is not less than 2000h. COP values> 3 No heating is required for heating cycles based on summer cooling. Refrigeration equipment has been used in the occasion, such as cold storage, skating rink, supermarkets and so on. Waste heat available for use. Large internal waste heat within the building, it is possible to use the internal heat source to heat the building when the ambient temperature is below zero, such as department stores, theaters, computer rooms. Conversely, the economics of a heat pump in the following situations are not certain: for heating only. COP <3. Heat pump capacity is much larger than the heating load.
Pulse Distance Sensor
Pulsed laser ranging module is a module that uses pulsed laser technology to measure distance. It emits a series of pulsed laser beams and calculates the distance between the target object and the module by measuring the round-trip time of the laser beams.PTFS has high ranging accuracy and long ranging range, strong anti-jamming ability, support for secondary development, a large number of ranges, safe for the human eye 905 nm, customizable frequency (20-3500 Hz), available for both indoor and outdoor. It can be widely used in speed measurement, displacement measurement, distance measurement and other fields.
Pulse Long-range laser distance sensors can measure distances of hundreds of meters to several kilometers, suitable for wide-area measurement and long-distance monitoring. These sensors are crucial in fields like surveying, Geographic Information Systems (GIS), mining, and drone mapping. For instance, in drone mapping, long-range laser distance sensors quickly acquire extensive terrain data, supporting the creation and updating of GIS.
high frequency laser sensor, long range laser distance sensor, high frequency laser ranging finder module, high speed laser measuring sensor
CHENGDU MESKERNEL INTEGRATED TECHNOLOGY CO.,LTD , https://www.meskernel.com