In a high-temperature refrigeration unit, the boiling point of the refrigerant in the coil is normally ____ lower than the cabinet temperature.

Medium-temperature refrigerated cabinet temperatures range from ____.

The process of ice making usually occurs in which temperature range?

What is the typical evaporator temperature range for low-temperature applications?

Troubleshooting and Typical Operating Conditions for Commercial Refrigeration Refrigeration and Air Conditioning Technology Condensing units located outside that are required to operate year-round must have ____.

With the entering air to the condenser above 70°F, the temperature difference between the outdoor air and the condensing temperature on standard units will be ____.

Which of the following is a typical head pressure and suction pressure for an air-cooled refrigeration system?

In a wastewater system, the water entering the condenser is 85°F and the water leaving the condenser is 105°F. Which of the following statements is a logical explanation for the above conditions?

In a wastewater system, the water entering the condenser is 85°F and the water leaving the condenser is 90°F. Which of the following statements is a logical explanation for the above conditions?

In a wastewater cooled system, the difference between the condensing temperature of the refrigerant and the leaving water temperature is approximately _____?

In a water-cooled condensing unit/cooling tower combination, the temperature difference of the water through the condenser will be approximately ____.

The approach of a cooling tower is the ____.

A thermostatic expansion valve's capacity will drop if the pressure drop across the valve increases.

High compression ratios will lead to lower compressor discharge temperatures.

Bubbles in the sight glass always indicate refrigerant shortage.

A sight glass that is full of vapor or liquid may look the same.

Low density vapors entering the compressor will mean low refrigerant flow through the compressor.

Because of the low refrigerant flow rate through the compressor and the system being undercharged, the 100% saturated vapor point in the condenser will be very low in the condenser, causing low condenser subcooling.

Dirty condenser coils are often the cause for inefficient condensers.

If the evaporator and compressor are starved of refrigerant, the condenser will also be starved.

For each 12,000 Btu/h capacity, a wastewater-cooled condensing unit uses approximately _______________ GPM.

For each 12,000 Btu/h capacity, a water-cooled condensing unit and cooling tower combination will circulate approximately _______________ GPM through the condenser.

The water quality required to maintain the water level in the sump is called _______________.

Most water-cooling towers can cool the water that supplies the condenser to a temperature within ________________°F of the wet-bulb temperature of the ambient air.

A low refrigerant charge will cause a(n) ____________________ suction pressure, which will increase the compression ratio.

If a system has a(n) ___ for a metering device, the device will try to maintain evaporator superheat even with an excessive overcharge.

Many products that require medium-temperature refrigeration will not freeze at 30°F because:

In a 2-ton capillary tube system, the unit does not develop full capacity. Head pressure is low and suction pressure is low. What is the problem?

In a 2-ton capillary tube system, the unit does not develop full capacity. Head pressure is high, suction pressure is high, and there is no superheat. What is the problem?

In a 2-ton TX valve system, the unit does not develop full capacity. Head pressure is high, suction pressure is slightly above normal, superheat is normal, and subcooling is above normal. What is the problem?

In a 2-ton capillary tube system, the unit does not develop full capacity. Head pressure is low and suction pressure is high. What is the problem?