Application of central water heater- heat pump

Heat pumps are widely used in families, villas, castles, hotels to provide large amounts of hot water, safe, convenient, and energy-saving for bathing, washing dishes, and heating systems for families and for warm floor heating production in winter. With high performance, energy saving, and environmental friendliness, this is one of the recommended products for use in households, hotels, and factories.

Central hot water systems are widely used in life today:

Central hot water systems for families (safe, convenient, and energy-saving)

Central hot water systems for industries, hotels, and factories

Central hot water systems for swimming pools and spas

Video of installing hot water for whole family

Video of central hot water installation for 50 room hotel

Structure, operating principle and application in life

Kahawa central water heater Heat pump is a leading Japanese brand in the heat pump industry, imported by Kahawa Vietnam in original packaging and distributed in the Vietnamese market, most commonly used today in villas, castles, hotels, factories. In addition to good price, the product is evaluated as durable, long-term warranty and maintenance, with superior technology compared to other brands such as conduit (anti-tangled). Kahawa central hot water system is installed on apartment balconies, or hotel building roofs to provide continuous and safe hot water, save electricity and modern amenities.

Video of installing central water heater for family

Advantages of the central heat pump water heater system

– High durability.

– Absolutely safe, no electric leakage.

– Saves up to 75% of electricity compared to a water heater.

– Not dependent on the weather.

– Environmentally friendly.

– Keeps heat for up to 72 hours (with a heat loss of about 10 degrees Celsius)

– Large capacity, a system can provide hot water for the entire building.

– Runs in automatic mode and according to the setting of usage needs

– Convenient and always has hot water, open the faucet and there is hot water (due to the return pump) with a large amount of hot water

Disadvantages:

– High initial installation cost.

– Installation location on the roof.

– Not popular with consumers.

Should I use a water heater or a Heat Pump?

With outstanding features and advantages, it can be seen that the birth of the Heat Pump central water heater system has solved most of the disadvantages of conventional water heaters for families as well as for projects and constructions with high demand for large capacity, stable, cost-optimized, absolutely safe and energy-saving hot water sources.

Compare investment costs and electricity consumption costs when using heat pumps with water heaters for families

A castle villa with 5 bathrooms (bathrooms) when using a direct electric resistance heating water heater will need 5 water heaters (each tank has an electric capacity of 2.5 KW x 5 tanks = 12 KW of electricity when in use + 5 switches, 5 atomats, electric cables + installation labor). When using a heat pump (total hot water), only 1 heat pump installed on the roof with an electric capacity of 1.2 KW is needed when using a heat pump, the electric capacity is much less than using a water heater and is safe (because the heat pump operates indirectly like an air conditioner), in terms of convenience when using a heat pump, hot water is always available and provides a large amount of hot water to meet all usage needs.

So using a heat pump to heat the oven is much more energy-saving and safe than using a direct electric water heater.

With the operating principle of low power, the central hot water system is evaluated to bring the highest heat exchange efficiency. It is a solution to avoid wasting energy resources thoroughly and is less harmful to the environment and saves electricity. Thanks to that, this technology is increasingly widely applied.

When the demand for hot water increases during peak hours, to provide enough hot water, cold water will be supplied directly to the thermal insulation to always have hot water, keep hot water during peak hours, serving the process of continuous water use without having to wait like traditional water heaters. Similar to air conditioners and refrigerators, the operation of a heat pump has the water heating substance circulated through a pressure pump.

There will be a heat exchange between hot water and water in the aquarium, then the heat is conducted back and heated (hot air in) by electric energy sources, oil, or hot gas ... then sent to the compressor. to continue heating before being sent to the insulation layer.

With such a structure, the operating principle is quite simple, the water led through the system is heated by a heating wire, controlled by a sensor relay.

Meet the large demand for many people and for many devices such as jacuzzi bathtubs

Save energy, safe for users, no dangerous electrical incidents occur.

The system can operate for a long time, durably, is a reliable product of many investors today.

Central hot water solution for projects Villas, families, hotels, restaurants, factories ...

Suitable for schools, small and medium hotels, resorts, villas ... Central hot water heaters are placed and heated in one location, circulating to create hot water flow with heat exchange by compressor.

Kahawa's central hot water heater has outstanding technology in the form of a tube, which brings high efficiency in the heat exchange process, preventing flow turbulence.

The machine uses optimal electricity to limit waste and can be used at any time. Using steam heating equipment, you can use it as a heater to replace air conditioners, heaters, heaters, fan heaters .... Especially, you can customize the temperature to suit your family, convenient when winter comes (with automatic mode and semi-automatic setting mode according to usage needs)

Integrated central water heater (1 unit)

Central hot water system

Video of installing a central hot water and total filtration system for a family

To install a central hot water system, you need: Heat pump; heat transfer device to heat water; tank, return pump, control cabinet, automatic booster pump, solenoid valve, piping system, connectors, auxiliary equipment and materials:

The most effective is when using a heat pump hot water system combined with a flat panel (solar panel), helping to increase efficiency. This is a new improved solution for the current solar water heater system. Helps the system always ensure the amount of hot water used even when there is not enough light or always ensure the source of hot water used even at night.

Compare investment costs and electricity costs when using a central hot water system with a water heater for hotels

A 30-room hotel with 30 bathrooms (bathrooms) when using a direct electric resistance heating water heater will need 60 water heaters (each heater has an electric capacity of 2.5 KW x 30 heaters = 75 KW when in use + 30 switches, 30 circuit breakers, electric cables for 30 water heaters). When using a heat pump (total hot water), only 1 heat pump installed on the roof is needed with an electric capacity of 4-6 KW. When using a heat pump, the electric capacity is much less than using a water heater and is safe (because the heat pump operates indirectly like an air conditioner). In terms of convenience, when using a heat pump, hot water is always available and a large amount of hot water is supplied to meet all usage needs.

Thus, using heat pump hot water solution saves investment costs in materials, installation labor, saves energy and is safe and meets the need for a large amount of hot water and is safe and convenient.

Clean water and hot water drawing diagram for hotel

Video of installing central hot water system for hotel

Installing water heater for 40 hotel rooms

How to choose the best heat pump central water heater

The Kahawa Heatpump central water heater system is manufactured using modern technology and Japanese standards and is recognized as the world's leading heat pump because:

- Good heat insulation layer, equipped with backup resistors, ensuring hot water is always available in case of problems.

- Absolutely antibacterial titanium enamel steel layer.

- Absolutely safe powder coated steel shell.

- High COP coefficient, fast heating, saving up to 70% of electricity, saving costs.

- High durability, smart operation.

- Simple installation, does not affect the structure of the house.

- Common and economical maintenance and repair.

Notes when choosing and using the central hot water system

Calculate the heat capacity needed to heat
Calculate the amount of hot water needed to use according to demand
Calculate the water flow needed to heat and supply for use
Calculate the pressure column,
Calculate the return pipe path, the return pipe diameter to ensure sufficient pressure column flow
Depending on the type of project and the purpose of use, we calculate and choose the appropriate Heat Pump capacity. With the aim of ensuring optimal investment costs and operating costs

Usually, the daily hot water consumption at 60 ° C per person is calculated as follows:

Low consumption: 30 liters / person / day.
Average consumption: 40 liters / person / day.
High consumption: 60 liters / person / day.

For example: A family of 5 people, the average hot water consumption is 40 liters / person / day. The total hot water demand of the whole family is: 5 x 40 = 200L / day.

With a capacity of about 200 liters per day, you can choose to install a small capacity central hot water system and 200 liter capacity components.

Video choosing the best heat pump

For hotelsIn buildings such as hotels, the hot water demand is related to the number of guests. In this case, the daily consumption is calculated by the average capacity of the rooms. Using this basis, the size of the recommended installed machine is determined. Here we calculate the average hot water demand of 40 liters per day per person.

For example, a hotel has 25 rooms, each room has an average of 2 people. So on average, the hotel uses 40 x 25 x 2 = 2000 liters of hot water per day. At this point, we use this 2000 Liter total capacity hot water tank and use a 5HP Heat Pump water heater.

Drawing of hot water solution for family

Diagram of clean water and hot water solution for family

To ensure that you have hot water immediately when you open the faucet, you must design and construct a return water line with heat insulation.

The system operates efficiently and saves electricity

Many times when installing a central hot water system, a hot water circulation pipe system is not installed.

Hot water is not always used in the family. Therefore, the water in the pipe will gradually cool down after 2-3 hours of non-use.

To have hot water, you must drain all the cold water in the pipe to have hot water to use. This is time-consuming and wastes a large amount of clean water.

Installing a circulating water pipe system and a temperature sensor valve will automatically collect the cold water in the pipe back to the Heat Pump to heat it up again. It helps to maintain a stable high temperature in the pipe.

The system is durable, no need to worry about burning the tank like a traditional water heater.

Low system operating costs, helping to save costs

High efficiency helps save 70% - 80% electricity

Free heat source, environmentally friendly

High efficiency and energy saving: using this type of water heater also limits energy waste. To heat the steam, you can use devices such as heaters, air conditioners, fireplaces, heating fans, etc. In the summer, the system will create cool steam to replace the air conditioner and can customize the temperature to suit the family, convenient for the winter.

Please contact the engineer for advice and quotation Hotline / Zalo: 0907 688 569