Sistemyi air-conditionings DAIKIN. Concept Energosberezheniya

Energopotreblenie one of the basic criteria of a choice of a central air. In system VRV of Japanese firm DAIKIN the principle energosberezheniya penetrates all technical decisions. Is not an exception and the system of the central management delivered completely with outside blocks. It supplies the account and a protime-tsionalnoe distribution of power inputs to air-conditioning between leasers, limits, if necessary, energopotreblenie.

KEYWORDS: ENERGOSBEREZHENIE, SYSTEM VRV DAIKIN

Obschepriznanno, tht central intellectual central air VRV of firm DAIKIN is the absolute champion on energosberezheniyu in the field of comfortable air-conditioning. On the average, VRV the system consumes 37 watt on 1 m2 the conditioned area of office space in July. For comparison, in system «chiller + fankoylyi» this indicator makes 64 Vt/m2.
As the resulted significances are very important naturally there is a question on their reliability. For system VRV reliability energopotrebleniya to check up very easily. System structure VRV includes computer control system DBACS (DAIKIN Building Air-condition Control System) which allows to make the exact account of the consumed electric power in a real-time. System DBACS can not only consider a current consumption, but also save it, entering reasonable restrictions on any regime parametres at system operation.
The electric power keeping of consumption records is made on each premise or on group of premises.
It is important, as premises often belong to different holders or are leased. In this case installations of the general metre of the electric power on the outside block it appears insufficiently. It is necessary to "paint" fairly the general expenses between consumers. And after all internal blocks work during the various period of time, actual holodoproizvoditelnost each internal block varies in due course and depends on the big number of regime parametres. Therefore, simply realised distribution of the consumed electric power of proportionally established capacity is the incorrect decision.
For correct definition of a share of expenses of the concrete internal block the system of distribution considering, besides the established capacity, operation time of the block during the control period as energopotreblenie the block is not to constants will be insufficient also. For example, wishing to lower power inputs, it is possible to set in a premise working in a mode of cooling, more a heat that will lead to reduction of receipt of the refrigerating agent in the internal block and to decrease energopotrebleniya the outside block.
The most correct and simultaneously simple decision is distribution of power inputs to proportionally cost of the refrigerating agent consumed by vnutren-them by blocks which has offered and has realised DAIKIN, having applied for account ener-gozatrat the information of the central control system already available and used at management by work of internal blocks (a Fig. 1).
Really the system contains only metres of the electric power necessary for accounts and cable communication lines from metres to data collection station, and all other equipment is regular, obligatory for system functioning.
Thus the metre all the same should be put, it is necessary to establish only it in the necessary performance: integrating with a pulse exit of a signal 1 impulse on kw hour (duration of an impulse from 40 to 400ms). The Communication line: two-core ekranirovannyiy a cable in 2*0,75 length to 200 m.
The cost of the refrigerating agent through the internal block is defined by a control system on holodoproizvoditelnosti the block and degree of opening of the dosing out gate. This information each 20 with acts on data collection station on a network of the central management where there is its processing and power inputs on separate consumers are distributed.
Program by it is possible to define night and day tariffs for the electric power, to establish time of action of the lowered tariffs.
In conditions, when limits on consumed by the equipment of a central air capacity act (a Fig. 2), the system of the central management allows to realise one of 3 variants of an establishment of limits:
Compulsorily at all consumers to raise a temperature preset value indoors
On established priorities (from 0 to 99) to disconnect the internal blocks serving less responsible premises
Compulsorily to forbid work of outside blocks at high numbers of turn-overs and, accordingly, with the raised capacity.
Unconditionally, it only a small part of the possibilities represented by central control system VRV for energosberezheniya. Here it is necessary to carry also: about-grammiruemoe taymernoe management, restriction of a range of temperatures accessible to the task the user, automatic installation of the supported temperature in premises depending on temperature of outside air and many other things.

Anatoly Shtejn, Boris Haritonov
Joint-Stock Company DAICHI, Moscow, Russia Source: HEAT&VENT FORUM MOSCOW 2002

It is introduced: on December, 03rd, 2002

Sistemyi air-conditionings DAIKIN. Concept Energosberezheniya

Energopotreblenie one of the basic criteria of a choice of a central air. In system VRV of Japanese firm DAIKIN the principle energosberezheniya penetrates all technical decisions. Is not an exception and the system of the central management delivered completely with outside blocks. It supplies the account and a protime-tsionalnoe distribution of power inputs to air-conditioning between leasers, limits, if necessary, energopotreblenie.

KEYWORDS: ENERGOSBEREZHENIE, SYSTEM VRV DAIKIN

Obschepriznanno, tht central intellectual central air VRV of firm DAIKIN is the absolute champion on energosberezheniyu in the field of comfortable air-conditioning. On the average, VRV the system consumes 37 watt on 1 m2 the conditioned area of office space in July. For comparison, in system «chiller + fankoylyi» this indicator makes 64 Vt/m2.
As the resulted significances are very important naturally there is a question on their reliability. For system VRV reliability energopotrebleniya to check up very easily. System structure VRV includes computer control system DBACS (DAIKIN Building Air-condition Control System) which allows to make the exact account of the consumed electric power in a real-time. System DBACS can not only consider a current consumption, but also save it, entering reasonable restrictions on any regime parametres at system operation.
The electric power keeping of consumption records is made on each premise or on group of premises.
It is important, as premises often belong to different holders or are leased. In this case installations of the general metre of the electric power on the outside block it appears insufficiently. It is necessary to "paint" fairly the general expenses between consumers. And after all internal blocks work during the various period of time, actual holodoproizvoditelnost each internal block varies in due course and depends on the big number of regime parametres. Therefore, simply realised distribution of the consumed electric power of proportionally established capacity is the incorrect decision.
For correct definition of a share of expenses of the concrete internal block the system of distribution considering, besides the established capacity, operation time of the block during the control period as energopotreblenie the block is not to constants will be insufficient also. For example, wishing to lower power inputs, it is possible to set in a premise working in a mode of cooling, more a heat that will lead to reduction of receipt of the refrigerating agent in the internal block and to decrease energopotrebleniya the outside block.
The most correct and simultaneously simple decision is distribution of power inputs to proportionally cost of the refrigerating agent consumed by vnutren-them by blocks which has offered and has realised DAIKIN, having applied for account ener-gozatrat the information of the central control system already available and used at management by work of internal blocks (a Fig. 1).
Really the system contains only metres of the electric power necessary for accounts and cable communication lines from metres to data collection station, and all other equipment is regular, obligatory for system functioning.
Thus the metre all the same should be put, it is necessary to establish only it in the necessary performance: integrating with a pulse exit of a signal 1 impulse on kw hour (duration of an impulse from 40 to 400ms). The Communication line: two-core ekranirovannyiy a cable in 2*0,75 length to 200 m.
The cost of the refrigerating agent through the internal block is defined by a control system on holodoproizvoditelnosti the block and degree of opening of the dosing out gate. This information each 20 with acts on data collection station on a network of the central management where there is its processing and power inputs on separate consumers are distributed.
Program by it is possible to define night and day tariffs for the electric power, to establish time of action of the lowered tariffs.
In conditions, when limits on consumed by the equipment of a central air capacity act (a Fig. 2), the system of the central management allows to realise one of 3 variants of an establishment of limits:
Compulsorily at all consumers to raise a temperature preset value indoors
On established priorities (from 0 to 99) to disconnect the internal blocks serving less responsible premises
Compulsorily to forbid work of outside blocks at high numbers of turn-overs and, accordingly, with the raised capacity.
Unconditionally, it only a small part of the possibilities represented by central control system VRV for energosberezheniya. Here it is necessary to carry also: about-grammiruemoe taymernoe management, restriction of a range of temperatures accessible to the task the user, automatic installation of the supported temperature in premises depending on temperature of outside air and many other things.

Anatoly Shtejn, Boris Haritonov
Joint-Stock Company DAICHI, Moscow, Russia Source: HEAT&VENT FORUM MOSCOW 2002

It is introduced: on December, 03rd, 2002

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