lesson 1 Flashcards
is the process of cooling by removing heat in an enclosed space and maintaining the temperature lower than ambient temperature
REFRIGERATION
is one process of refrigeration. Aside from cooling and maintaining a low temperature in an enclosed space, it also involves conditioning of the air such as; humidity, air motion, cleaning, filtering, and even sanitizing the air.
AIR-CONDITIONING
are used to loosen bolts and nuts. They are open-end, box-end, adjustable, socket, and Allen wrench.
Wrenches
are used to drive and loosen screws. They are classified as flat head, Philip’s head, and socket head screw drivers.
Screw drivers
are used for cutting metals in jobs such as breaking rivets and splitting nuts
Cold Chisels
What are the different types of cold chisels
Diamond Cut chisel
Flat Chisel
Half round chisel
Cross cut/ cape chisel
are tools used for holding objects by the grip of hand. They are classified as mechanical pliers, long nose pliers, slide side cutting pliers, and vise grip.
Pliers
are tools used to cut tubings made of copper, aluminum or steel. As the tool is turned, a sharp wheel cuts into tubing. Pressure is gradually increased until the tube is cut-off clearly and squarel
Tube cutters
are tools used to flare the end of the tube to hold the flare nut
Tube flaring tools
a special kind of tool used to bend copper tubing in order not to bring the angle or side of the tube.
Tube bending tools
are tools used to expand the end of the tubes of the same diameter for the purpose of making joints by soldering or brazing.
Tube swaging tools
a gasoline torch used for heating solder in soldering or brazing process to join two tubes together
Blow torch
equipment used in welding, cutting, and brazing. It is able to produce a very high intensity of heat from a combination of oxygen gas and acetylene fuel.
Oxy-acetylene welder
is a Freon tank intended for servicing and recharging refrigerators and air-conditioning units. It has a limited capacity
Service Tank
a flexible hose attached to the service tank and gauges during the charging process
Service hose
a special kind of gauge intended to measure the pressure and the amount of refrigerant (Freon) inside the system.
Compound gauge
an instrument used to measure voltage, resistance and dc currents
Multi-tester
and instrument used to measure ac current. Usually used in diagnosing and monitoring the current of refs and air-con during troubleshooting operation.
Clamp meter
an instrument used to detect areas or parts of the tube system where refrigerant is leaking
Leak detector
Compressor is what kind of machine?
Hermetic and reciprocating machine
The heart of the system. Compress the refrigerant into a superheated gas and pumps it to circulate in the entire tube system
Compressor
Cools down the superheated gas through conduction
Condenser
cooling medium
water, brine or another refrigerant
What are the refrigeration flow control
expansion valve, capillary tube or throttling device
