It collects the liquid refrigerant draining from the condenser. The shell is provided with one refrigerant inlet and two outlet connections and a magnetic float type indicator for determining the liquid level. The cold suction gas cools the warm liquid refrigerant, thus, increasing the efficiency and capacity of the system.
The capacity is reduced with reduction in suction pressure. The plant supplies liquid refrigerant to the evaporators to maintain the refrigerated spaces listed below at the temperature indicated.
Thermal Expansion Valve TEV The solenoid stop valves, actuated by temperature control switches, cut off the supply of liquid refrigerant to the thermal expansion valves when the desired temperature is reached in the space or medium being cooled. The condenser water regulating valve should be set to maintain a condensing pressure of approximately psig.
After the water has passed through the cooler and it mixes with the returning water from a recirculating pump; it is then discharged throughout the ship. One compressor can handle the entire load with the other compressor remaining as standby or, if necessary, being using to operate the auxiliary water chiller.
A bypass valve is provided in the liquid line to the interchanger. It may also pass through a liquid line dryer, an electrically operated solenoid, which senses cooler outlet temperature, and finally to the thermostatic expansion valve to the cooler.
Sea water flow is regulated by a water regulating valve which senses the condensing pressure. An internal relief valve set to relieve at psi above the existing suction pressure An oil pressure safety switch which will stop the compressor if oil pressure should drop below the minimum required for satisfactory lubrication.
The system is a closed loop. Finned coils 57 sq. Finned coils sq.
The condenser is constructed of a steel shell with copper nickel tubes and tube Dual evap refrigeration and gun metal waterheads. Chilled Water System The chilled water system supplies ice cold water to all of the older scuttlebutt located around the ship as well as to rooms on the bridge, sun an "A" deck.
These are only on the forward units. Thermal Expansion Valves The thermal expansion valves control the quantity of liquid refrigerant that passes to each refrigerant circuit within the cooling coils.
Solenoid Valve High and Low Pressure Control Switches The high pressure control stops the compressor in the event of excessive pressure in the high side of the system and permits the compressor to be started again when the pressure drops to the cut-in setting of the high pressure control by pushing the controller start button.
Cold diffuser 1 The plant also provides refrigeration for two service box brine coolers, two ice water coolers, and may be used to serve the auxiliary water chiller.
Thus, their Dual evap refrigeration function is; automatic expansion control and prevention of liquid refrigerant from surging back to the compressor.
The higher temperature compartments are provided with ceiling suspended type cold diffusers which contain a direct expansion cooling coil constructed of copper finned tubing enclosed in a galvanized casing with a drip pan. Each cold air diffuser has a propeller type fan mounted at the rear of the unit.
The low pressure control stops and starts the compressor at the proper predetermined suction pressures. Water from the potable water system is either pumped directly into the system, or is directed to an insulated cooler located on the refrigeration flat, port side. These two controls are contained in one switch box called the dual pressurestat.
Compartment Temperature Type of Evap. After the Freon has cooled the water, it passes through a back pressure regulator and continues back to the main system. The chiller is a shell and tube heat exchanger with water or brine flow through the shell and refrigerant through the tubes.
A dual pressurestat which automatically starts and stops the compressor during normal operation. The entire plant requires a charge of approximately lbs. The compressor has a cast iron crankcase and is provided with a structural steel base.
The refrigerant vapor is admitting to the shell and condenses on the outer surface of the finned tubes. The auxiliary water chiller can be used with either brine or water and it may supply the air conditioning system under low load conditions or the cargo refrigeration plant condenser.Refrigeration Basics: Dual Evaporators & Deep Evacuation Participant Guide a refrigerator with a dual evaporator or a sealed system that has multiple paths.
In your Tech Assit app, search for and watch the “Deep Evacuation Clip” video. Step Procedure 1. Select the Revit Families you need for your system design and contact your local Trane representative for the BIM files.
I have a dual evaporator kitchenaid refrigerator model kfis29pbms00 with normal refrigerator compartment - Answered by a verified Appliance Technician. Digital sensors constantly monitor conditions within the refrigerator, while the Linear Compressor and Dual Evaporator react to keep humidity at bay.
MORE GREAT SMART COOLING PLUS FEATURES linear compressor. OVERVIEW. The Cube DTC induced draft evaporative condenser is an indirect evaporative heat exchanger that converts refrigerant from vapor to liquid and efficiently rejects heat to the atmosphere. The latest release of TRACE focuses on updating and adding to the standard libraries that come with TRACE What's New in TRACE (June ).Download