” EKODAN ” – economical heating
Unlike conventional heating systems based on the combustion of gas or liquid fuel , as well as direct transformation of electric energy into thermal energy in the heat pump is not consumed to produce heat , but only its transfer from the external environment . That’s what makes these systems an attractive solution for space heating and hot water at sites with limited energy resources.
Heat pumps ” Ekodan ” manufactured by Mitsubishi Electric, intended for individual heating and hot water town houses and similar buildings that do not have access to such a relatively cheap energy sources such as gas and liquid fuels , as well as substantially limited in the electrical power input .
Maximum heat output of a system of ” Ekodan ” is 14 kW, which is commensurate with modern heat loss of individual country houses. To increase the power provided an opportunity to cascade systems.
Heat pump ” Ekodan ” consists of two units : the outdoor unit , which is largely similar to the outdoor unit air conditioner, and indoor unit – hydronic heating water performing . Units are equipped with all the necessary control devices , control and regulation . Installation of such a system is no different from conventional air conditioning installation – cope with it any HVAC company . Excludes complex design heating and DHW system of separate components: a hydronic distribution system simply connects to the sanitary water use , as well as forward and reverse heating pipes .
In one circuit can combine two types of heaters : radiators and underfloor heating ( “warm floor” ) . For this two-zone automatic equipped with hydronic control , for example, in the loop ” warm floor” will be supported by the coolant temperature +30 ° C, and in the radiators – +60 ° C. Additional flexibility system gives the ability to change the target temperature timer separately for each zone.
Hydronic ” Ekodan ” DHW storage tank 200 liters .
Heat Pump Mitsubishi Electric EcoDan can maintain a constant temperature of water supplied to the heater. Weather-dependent heating is provided , wherein the temperature of the water varies depending on the outdoor temperature . You can program almost any relationship between the temperature of water and air , but to determine the best match for the real object very difficult. This will require multiple parameters to adjust the relationship . Understanding this complexity , the company Mitsubishi Electric has introduced a special regime of automatic adaptation . Master controller measures and stores the current values of the coolant temperature , air temperature, outside air temperature , as well as the dynamics of their changes. On the basis of these data, calculated the required capacity and its projected future value . Auto-adaptation mode allows you to get additional savings while maintaining comfort and even improving conditions.
Outdoor units for heat pumps, Mitsubishi Electric is available in two versions : a series of highly efficient Power Inverter series with stabilization and thermal performance Zubadan Inverter. The minimum temperature of the outside air for the specified series of -20 ° C and -25 ° C respectively. In regions where winter temperatures can fall below these values , it is necessary to combine heat pump Mitsubishi Electric EcoDan « air – water” with an alternative heating system , such as a boiler on liquid or solid fuel . This approach minimizes the operation of an alternative system , since most of the time during the heating season will run the heat pump and the auxiliary system will be used in the rare cold days , as well as a reserve .
Hydronic ” Ekodan ” no hot water tank .
Such combined systems are called bivalent , and the temperature at which connects auxiliary heating system , – a point bivalence . There are four types of interaction with the auxiliary system. The first method is based on measuring the outdoor temperature. Auxiliary system is turned on, if the outside temperature falls below a predetermined point bivalence . The second method allows you to switch to a backup heat source , taking into account the cost of energy . For this it is necessary to introduce the gas cost , liquid or solid fuel as well as the cost of electricity . Embedded software calculates the optimum point bivalence . The third way you can arrange to switch on the basis of equivalent emissions of carbon dioxide for various types of energy . Finally, the fourth way – the connection of the auxiliary system by an external signal , for example, restrictions on the signal peak electricity or external timer , the specified time range of the nightly rate for electricity.
Hydronic ” Ekodan ” are also available in the modification without storage tank. These devices are designed to scale heating system : up to six identical heat pumps can be connected in cascade , thus increasing the heat output up to 84 kW , as well as to maintain high efficiency over a wide power range . The control unit calculates the optimum moment of switching on and off stages . Provided periodic change order incorporating systems (rotation ) for the establishment of a resource leveling devices , and automatic replacement of a defective unit to other heat pump cascade .