巴普蒸发式冷凝器

Application,Principe and Characteristics of Brapu Evaporative Condenser

蒸发式冷凝器是巴普重要制冷产品之一，其具有热效率高、节能、节水、结构紧凑和安装方便等优点，广泛应用于石油、化工、啤酒、乳品、食品、医药、工业制冰等行业的制冷、低温加工、冷藏、速冻以及建筑的空气调节等领域。

Evaporative condenser is one of the important of Brapu refrigeration products, its high thermal efficiency, energy saving, water saving, compact structure and convenient installation, widely used in oil, chemical, beer, dairy, food, medicine, industrial ice industry of refrigeration, low temperature processing, refrigeration, freezing and building air regulation, etc.

蒸发冷是制冷系统中的主要换热设备，它的作用原理是：制冷系统中压缩机排出的过热高压制冷剂气体经过蒸发式冷凝器中的冷凝排管，使高温气态的制冷剂与排管外的喷淋水和空气进行热交换。即气态制冷剂由上口进入排管后自上而下逐渐被冷凝为液态制冷剂。配套引风机的超强风力使喷淋水完全均匀地覆盖在盘管表面，水借风势，极大的提高了换热效果。温度升高的喷淋水由部分变为气态，利用水的汽化潜热由风势带走大量的热量，热气中的水滴被高效脱水器截住，与其余吸收了热量的水，散落到PVC淋水片热交换层中，被流过的空气冷却，温度降低，进入水箱，再经循环水泵继续循环。蒸发到空气中的水分由水位调节器自动补充。

Evaporative condenser is the main heat exchange equipment in the refrigeration system. Its principle of action is: the overheated high pressure refrigerant gas discharged by the compressor in the refrigeration system passes through the condensing exhaust pipe in the evaporative condenser, so that the high temperature gas refrigerant can heat exchange with the spray water and air outside the exhaust pipe. That is, the gaseous refrigerant is gradually condensed into liquid refrigerant from top to bottom from the upper mouth into the discharge pipe. The super wind force of the supporting induced draft fan makes the spray water cover the surface of the coil completely and evenly, and the water borrows the wind potential, which greatly improves the heat exchange effect. Temperature rising spray water from part to gas, using the water of the vaporization latent heat by the wind away a lot of heat, heat water droplets by efficient dehydrator, and the rest of the heat absorbs the water, scattered to the PVC water sheet heat exchange layer, through the air cooling, temperature reduction, into the water tank, then the circulating pump continue to circulate. The moisture evaporated into the air is automatically replenished by the water level regulator.

因巴普蒸发式冷凝器独特的优点，所以其在全球的能源化工、石化行业减压装置、催化裂化装置、加氢裂化装置、延迟焦化装置、气体分馏装置、烷基化等装置，化工行业甲醇、合成氨、二甲醚、醇烃化、苯加氢、煤焦油加氢、煤制油、煤制烯烃及煤制乙二醇等行业物料的冷凝冷却有广泛的应用。

Because of the unique advantages of Brapu evaporator condenser, so in the global energy chemical industry, petrochemical industry, catalytic cracking device, hydrocracking device, delayed coking unit, gas fractionation device, alkylation unit, chemical industry, synthetic ammonia, dimethyl ether, benzene hydrogenation, hydrogenation of coal tar, coal to oil, coal to olefin and coal to ethylene glycol material condensation cooling has been widely used.

蒸发式冷凝器的传热效果同风冷式冷凝器相比，冷凝温度比较低，这是因为风冷式冷凝器的冷凝能力受限于环境的干球温度，而蒸发式冷凝器的冷凝温度可接近于环境的湿球温度，通常湿球温度比干球温度低8℃，因此其冷凝温度较低，换热效果大大优于风冷式冷凝器。同带冷却水塔的水冷式冷凝器相比，蒸发式冷凝器由于制冷剂与冷却水进行的传热、传质交换一次完成，主要依靠水的蒸发潜热带走冷凝热负荷，尤其是夏天的冷凝温度较低，水的消耗量大为减少，理论上耗水量仅为水冷式的5-10%，实际上也仅仅在15%左右，故整个装置结构紧凑、体积小，占地面积少。采用蒸发式冷凝器，降低了制冷系统的冷凝温度，故压缩机的输人功率减少，冷凝器的总耗功率也显著降低，因而能够实现明显的节能。因为冷凝温度每升高1℃，单位制冷量的耗电量将增加3-3.5%。不少测试报告显示，同等条件下，如采用蒸发式冷凝器后，能降低制冷装置能耗10%左右。

Evaporative condenser heat transfer effect compared with air-cooled condenser, condensation temperature is low, because the condensation ability of air-cooled condenser is limited by the environmental dry ball temperature, and evaporative condenser condensation temperature can be close to the environment of the wet bulb temperature, usually wet bulb temperature 8℃ lower than dry bulb temperature, so the condensation temperature is low, heat transfer effect is much better than air-cooled condenser. Compared with cooling water tower water cooled condenser, evaporative condenser due to refrigerant and cooling water heat transfer, mass transfer exchange a complete, mainly rely on the evaporation of water latent heat away condensation heat load, especially the summer condensation temperature is low, water consumption is greatly reduced, water consumption is only 5-10% of water cooling, in fact is only around 15%, so the whole device is compact structure, small volume, covers an area of less. The evaporative condenser reduces the condensation temperature of the refrigeration system, so the transmission power of the compressor is reduced, and the total power consumption of the condenser is also significantly reduced, so the obvious energy saving can be realized. Because for every 1℃ increase in the condensation temperature, the power consumption per unit of cooling capacity will increase by 3-3.5%. Many test reports show that under the same conditions, such as using the evaporative condenser, the energy consumption of the refrigeration device can be reduced by about 10%.