Questions tagged [refrigeration]

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Why is there limited use of Y (Wye) fittings in a refrigeration system?

I'm a Mechanical Engineering intern currently working in HVAC and Refrigeration for grocery stores. I'm looking into ways, with lower energy losses, to encourage equal flow distribution at liquid pipe ...
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2 votes
2 answers
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Copper pipe for brine water block ice system

I am looking to replace copper pipes from a brine water block ice system . The pipes needed are 5/8 but wonder what wall thickness it should be. They should be thick enought to withstand 60 psi ...
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Can any Air rotameter be used for refrigerant gas by using equation conversion?

Currently, I am trying to find rotameter calibrated for R134A gas flow. However, most companies only sell rotameter or variable area flowmeter for water/Air/Nitrogen flow. Is it possible to use any ...
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DC Inverter motor AC utilization category

I am looking at specs of an air conditioner unit. It uses DC inverter technology and maximum current listed as 21.5A So are DC inverter motors considered resistive or inductive? What utilization ...
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Adjusting the pressure of the condenser and the evaporator

The picture below shows a refrigeration unit I was reading the operation manual of this unit. It is written that the pressure of the condenser is controlled by the water flow rate. Reducing water ...
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The Volumetric Flowrate Under Suction Condition

For a National Board Exam Review: An air conditioning plant with a capacity of $400$ $kW$ of refrigeration has an evaporating and condensing temperature of $3$ $^oC$ and $37$ $^oC$ respectively....
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What if ammonia is used as a refrigerant for a refrigerator?

I have a refrigerator whose compressor configuration is: power- 10hp compression ratio- 10:1 I do not have expertise in this field, but I am curious if I use ammonia as a refrigerant instead of HFC-...
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Dimension of an evaporator coil

I need to cool 3 galons of water from 77 to 32°F to form an ice bank that I will use to cool beer (it is a noble effort, you see). I figured I need to install a cooling capacity of 0.34 kw to lower ...
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How to compute the performance of a refrigerant?

As I understand it, there are 5 key factors that determine the performance potential of a refrigerant gas: Vapor density Enthalpy of vaporization Thermal Conductivity Critical temperature Specific ...
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