Question

21.Why are throttling devices commonly used in refrigeration and air-conditioning applications?

Answer 1

Answer is given below

Explanation:

we know that some common types of throttling devices are

• Hard -throttling devices
• Capillary valve
• Constant pressure throttling devices
• Thermostatic expansion valve
• Float expansion valve

so here throttling devices commonly used in refrigeration and air-conditioning because

• To reduce the coolant pressure, the high pressure of the refrigerant from the condenser is necessary to reduce the evaporation to obtain evaporation at the right temperature  
• To meet the refrigerated load, the throttling valve flows through the coolant to cool the load at high temperatures.