Window air conditioner consists of a compressor, a condenser, a drier, filter, capillary tube and an evaporator, An electric motor drive the fan to circulate air through condenser coil and runs a blower to deliver either cool air to room or suck air from it before forcing through the evaporator coil which cools as well as dehumidifies the air. A [...]
In this article we will discuss about:- 1. Parts of a Water Cooler 2. Working Principle of the Water Cooler 3. Electrical Circuit. Parts of a Water Cooler: The various parts of a water cooler are: 1. Compressor 2. Motor 3. Receiver 4. Condenser 5. Expansion valve 6. Evaporator coils surrounding the water tank 7. Water tank 8. Cover 9, [...]
In this article we will discuss about:- 1. Meaning and Objective of Air-Conditioning 2. Parts of Air Conditioner 3. Working 4. Electric Circuits. Meaning and Objective of Air-Conditioning Air conditioning may be defined as the production of an artificial atmosphere specially adopted to particular requirement or air-conditioning means control of temperature, humidity, purity and movement of air. The working conditions [...]
The various parts of a domestic refrigerator are: 1. Compressor 2. Condenser 3. Capillary tube 4. Evaporator 6. Thermostat temperature control and "off - on" switch. 7. Space for shelves 8. Suction line 9. Discharge line In a domestic refrigerator condenser is generally provided at the back of the refrigerator. Working: The domestic refrigerator works on vapour compresses system. It [...]
There are two refrigeration systems: 1. Vapour Compression Refrigeration System 2. Vapour Absorption Refrigeration System. 1. Vapour Compression Refrigeration System: This is the most important system for commercial and domestic utility. The working fluid, known as refrigerant. It can be used over a large range of temperatures. Working: The working substance (refrigerant) is such that it readily evaporates and condenses. [...]
In this article we will discuss about the functions of High Power LEDs (HPLEDs) with the help of a suitable diagram. High power LEDs (HPLED) can be driven at currents from hundreds of mA to more than an ampere, compared with the tens of mA for other LEDs. Some can emit over a thousand lumens. Since overheating is destructive, the [...]
The following points highlight the three main energy efficient devices which are used in electrical system in industries. The devices are: 1. Maximum Demand Controllers 2. Soft Starter 3. Variable Speed Drives. Device # 1. Maximum Demand Controllers: High-tension (HT) consumers have to pay a maximum demand charge in addition to the usual charge for the number of units consumed. [...]
The following points highlight the five main energy efficient lighting equipments and its control. The equipments are: 1. Electronic Ballast 2. Occupancy Sensors 3. Timed Based Control 4. Daylight Linked Control 5. Localized Switching. Equipment # 1. Electronic Ballast: Role of Ballast: In an electric circuit the ballast acts as a stabilizer. Fluorescent lamp is an electric discharge lamp. The [...]
Some of the commonly used electrical appliances are as follows: 1. Electric Bell 2. Single-Stroke Bell 3. Electric Bell with Indicators 4. Electric Buzzer 5. Electric Heater - Hot Plate 6. Electric Iron. Electrical Appliance # 1. Electric Bell: In all such places as a house, a hotel, a hospital etc., the electrical appliance which is mostly in use—apart from [...]
In this article we will discuss about:- 1. Size of the Fluorescent Lamp 2. Construction, Functioning & Accessories of a Fluorescent Lamp 3. Mode of Functioning of a Starter of Fluorescent Lamp 4. Power Factor of the Fluorescent Lamp 5. Power Factor of the Fluorescent Lamp 6. Suppression of Radio Interference in the Fluorescent Lamp 7. Use of Two or [...]