A generator is a device that converts mechanical energy into electrical energy and can provide electrical energy under special circumstances. Generators use the principle of electromagnetic induction, the relative movement between the magnetic field and the conductor to generate induced electromotive force, and thus output electrical energy. They are widely used in industry. ในเวลาเดียวกัน, some small เครื่องกำเนิดไฟฟ้า such as diesel generators are becoming more and more widely used in homes.

Diesel generator for home

What is a home diesel generator? A home diesel generator is a device that uses diesel as fuel, converts the chemical energy of diesel into mechanical energy through a diesel engine, and then converts the mechanical energy into electrical energy through a generator to provide electricity for the home. วันนี้, I will introduce the use and specifications of diesel generators for home in this article, so that you can make it easier when buying a home diesel generator.

How does a diesel generator for home work?

Diesel generator = diesel engine + generator head + ระบบควบคุม + cooling & ระบบไอเสีย, working together to turn diesel into electricity we can use.The essence of the working principle of a domestic diesel generator is a process of converting the chemical energy of diesel into electrical energy (“diesel combustion → mechanical energy → electrical energy”). Through the following five steps, we can clearly understand the power generation principle of a domestic diesel generator.

Diesel Electric Generator For Home Working Process

1. Diesel combustion drives the engine

ที่ “heart” of a diesel generator is a diesel engine. Diesel is transported from the fuel tank to the high-pressure injector of the engine through an oil pump. The injector atomizes the diesel and sprays it into the high-temperature cylinder, where it mixes with the compressed air and self-ignites (diesel engines rely on compression ignition and do not require spark plugs). It drives the piston to work by burning diesel, which in turn drives the crankshaft to rotate. This part is like the engine of a car. The high-temperature and high-pressure gas generated by combustion drives the piston to reciprocate, and converts the linear motion into rotational mechanical energy through the crankshaft. The principle is the working cycle of an internal combustion engine (usually four strokes: intake, compression, งาน, and exhaust).

2. Mechanical energy is converted into electrical energy

The engine drives a generator head (generator part) through a coupling or belt. This generator is usually an AC synchronous generator, which cuts the stator coil through a rotating magnetic field, thereby inducing voltage and outputting AC power.

3. Stable output voltage and frequency

The power output by the generator is not stable at the beginning, so the system will have a voltage regulator (AVR) to control the output voltage to remain in a certain range, and automatically adjust the excitation current through the regulator to ensure that the output voltage is stable (usually 220V single-phase or 380V three-phase). ในเวลาเดียวกัน, there is a speed regulation system to ensure that the engine maintains a constant speed (โดยปกติ 3000 รอบต่อนาที, corresponding to 50Hz AC frequency).

4. Output to household circuits or energy storage systems

The power output by the motor is connected to the household distribution box through a cable. The generated electricity can be directly used for household appliances, or connected to the household power grid through an automatic transfer switch (ATS), and automatically switched to the generator power supply when the city power is cut off.

5. Collaborative work of auxiliary systems

Diesel engines generate a lot of heat when in operation. ในเวลานี้, the cooling system works to dissipate heat through fans or water cooling cycles to prevent overheating and shutdown. The lubrication system continuously provides lubrication to engine components through the oil pump to reduce friction loss. The exhaust gas after combustion is discharged through the exhaust pipe (ventilation must be ensured to avoid carbon monoxide accumulation).

How many kva does a domestic diesel generator have?

Diesel generators for home use are also called small diesel generators for home. The power is usually between 5-20kva, and 20kva-500kva is often used in industry.
The following are 5 types of common household diesel generator power:

1. Below 5kVA: basic lighting, small appliances

2. 5-8kVA: support refrigerators, TVs, computers, ฯลฯ.

3. 8-10kVA: support air conditioners, water heaters, ฯลฯ.

4. 10-15kVA: higher power equipment, used in multiple rooms

5. 15-20kVA: commercial use or large families

Common kVA range and uses of household diesel generators

Diesel generators for home use kva levels specifications

1-5kVA diesel generator for home use

Temporary power outage backup, supports low-power devices (such as LED lights, mobile phone chargers, routers). Suitable for remote areas without power grid (such as pastoral areas, mountain cabins).

5-8kVA diesel power generator for home specifications

Small home main model, supports refrigerators, computers, TVs, small air conditioners (1 แรงม้า).Suitable for short-term power outages in 3-4-person households (such as typhoons, heavy rains).

10-15kva diesel generator for home use specifications

Applied in high-end home/commercial models, high-power consumption equipment in the whole house (such as central air conditioning, floor heating, oven, suitable for villas, farms or small shops.

15-20kVA diesel generators for home use specifications

Industrial-grade backup power supply, diesel generator sets in parallel to support factory equipment and construction sites.Full house power supply in extreme situations (such as earthquakes, floods, long-term power outages).

What are the advantages of diesel generators for home?

Home diesel generators have a variety of application advantages, which make them perform well in a variety of scenarios such as home backup power supply, emergency backup, outdoor activities, ฯลฯ.

7 advantages of diesel generators for the home

1. High reliability

Diesel engines have a simple structure, strong durability, and can operate stably in various environments. Even in harsh weather conditions (such as heavy rain, high temperature, low temperature, เป็นต้น), they can maintain good performance.

2. Good fuel economy

Diesel engines have high fuel economy, consume less fuel per unit time, and can generate more mechanical energy. This makes diesel generators highly economical in long-term use.

3. ค่าบำรุงรักษาต่ำ

Diesel engines have a relatively simple structure and are relatively easy to maintain and repair. Regularly replace the engine oil, air filter and fuel filter to maintain good operating condition. Under normal use and maintenance, the service life is long, which reduces long-term maintenance costs.

4. การปรับตัวที่แข็งแกร่ง

Diesel generators can operate in various complex environments, including high temperature, low temperature, ความชื้น, dust and other harsh conditions. It can adapt to different load requirements, and can provide stable power supply for low-power to high-power devices, suitable for a variety of application scenarios such as homes, small factories, สถานที่ก่อสร้าง, ฯลฯ.

5. Stable power output

Diesel generators are equipped with advanced control systems that can automatically adjust voltage and frequency to ensure stable output power, suitable for powering various sensitive devices (such as computers, medical equipment, เป็นต้น).

6. Strong independence

Diesel generators can operate independently when the power grid is not covered or the power supply is unstable, providing power support for remote areas, isolated island communities or outdoor activities. Even when the power grid is normally powered, diesel generators can also be used as a backup power source to ensure that power can still be provided in the event of a sudden power outage.

7. Portability and flexibility

Some diesel generators are designed to be mobile, easy to carry and install, and suitable for outdoor activities, temporary construction and other scenarios that require flexible power supply. Diesel generators start quickly and can provide power support in a short time, suitable for emergency use.