SU552472A1

SU552472A1 - Heating and Cooling System

Info

Publication number: SU552472A1
Application number: SU2167700A
Authority: SU
Inventors: Владимир Наумович Бродский; Николай Николаевич Павлов; Юрий Иванович Шиллер; Иосиф Израилевич Логвинский; Владимир Петрович Федоров
Original assignee: Государственный Проектный Институт "Сантехпроект"; Государственный Московский Проектный Институт; Проектный Институт "Проектпромвентиляция"
Priority date: 1975-08-22
Filing date: 1975-08-22
Publication date: 1977-03-30

Description

1one

Изобретение относитс к технике кондиционировани воздуха, а именно к системам теплохолодоснабжени установок кондиционировани воздуха со смесительными и рекуперативными тепломассообменными аппаратами .The invention relates to an air-conditioning technique, namely to systems for heat and cold supply of air-conditioning installations with mixing and recuperative heat and mass transfer devices.

Известны системы теплохолодоснабжени установок кондиционировани воздуха, содержащие циркул ционный контур с двум подающими трубопроводами, на которых установлены теплообменники, и одним возвратным трубопроводом, аппараты дл обработки воздуха с регулирующими вентил ми, соединенными с терморегул тором, установленными на ответвлени х от трубопроводов, и размещенные на лини х подвода теплоносител к теплообменникам регулирующие клапаны, соединенные с датчиками температуры, установленными на подающих трубопроводахHeat-cooling systems for air-conditioning installations are known, which contain a circulation loop with two feed piping, on which heat exchangers are installed, and one return piping, air treatment units with control valves connected to a temperature controller installed on branches from pipelines, and placed on heat exchanger supply lines to heat exchangers control valves connected to temperature sensors installed on supply lines

1. Известные системы хот и обеспечивают1. Known systems although provide

поддержание заданных параметров воздуха, но весьма неэкономичны по потреблению энергии из-за смешивани в возвратном трубопроводе отработанного энергоемкого холодоносител с теплоносителем. При этом в летний период года это вызывает непроизводительный расход холода, а в зимний - непроизводительный расход тепла.maintaining the specified air parameters, but very uneconomical in terms of energy consumption due to mixing in the return pipeline the spent energy-intensive coolant with the coolant. At the same time, in the summer period of the year this causes unproductive consumption of cold, and in winter it causes unproductive consumption of heat.

Целью изобретени вл етс повышение экономичности системы.The aim of the invention is to increase the efficiency of the system.

Дл этого в предложенной системе на подающих трубопроводах установлены датчикикорректоры , включенные в цепь управлени исполнительными механизмами регулирующих вентилей каждого из аппаратов, а на одном из подающих трубопроводов размещен регул тор давлени , включенный в цепь управлени регулирующими клапанами и подсоединенный к датчику корректора по энтальции , расположенному в потоке наружного воздуха. На чертеже схематически изображена описываема система теплохолодоснабжени установки кондиционировани воздуха.To do this, in the proposed system, sensors correctors are included in the supply pipes, included in the control circuit of the actuators of the control valves of each of the devices, and one of the supply pipes is equipped with a pressure controller connected to the control valves of the control valves and connected to the corrector sensor on the enthalation located in outdoor air flow. The drawing shows schematically the described system of heat and cold supply of the air conditioning installation.

Система содержит циркул ционный контур с двум подающими трубопроводами 1, 2, наThe system contains a circulation loop with two feed lines 1, 2,

которых установлены теплообменники 3, 4, и одним возвратным трубопроводом 5, аппараты дл обработки воздуха 6, 7, с регулирующими вентил ми 8-12, соединенными с терморегул торами 13, 14, и размещенные наheat exchangers 3, 4, and one return pipe 5, air treatment devices 6, 7, with control valves 8-12, connected to thermostats 13, 14, and placed on

Claims

Supply lines 15, 16 of the heat transfer medium to heat exchangers 3, 4 control valves 17, 18 connected to temperature sensors 19, 20 installed on supply lines 1, 2. In addition, sensors-correctors 21, 22 are installed on supply lines 1, 2 included in the control circuit of the actuating mechanisms of the regulating valves 8-12 of each of the devices 6, 7. On one of the supply pipelines 2 a pressure regulator 23 is installed, connected to the circuit controlling the regulating valves 17, 18 and connected to the enthalpy correction sensor 24, located nnomu in the stream of external air. For normal operation, the system is equipped with circulation pumps 25, an apparatus 26 for bactericidal water treatment, a tank 27, a filter 28. The system works as follows. The enthalpy sensor 24 of the outside air, connected with temperature sensors 19 and 20 and pressure regulator 23, automatically determines the mode of operation of the system, i.e., the temperature and pressure of the heat and coolant supplied to the network is necessary. With an increase in the enthalpy of outside air, the temperature of the heat and coolant decreases accordingly and vice versa. The pressure in the network increases with increasing or decreasing enthalpy of outside air, depending on the specified minimum pressure value. The function of the sensor-corrector 24 also includes switching the heat exchangers 3 and 4 from the cooling mode to the heating mode and vice versa, i.e. the transition to summer, winter and transitional modes of operation. For example, in the cold period of the year, water or salt solution from the tank 27 is pumped into the heat exchangers 3 and 4 by the pumps 25, heated to a temperature of -10 ° C and 70 ° C and then supplied to the consumers via pipes 1 and 2. Maintaining the desired pressure in the network with the correction for enthalpy of external air is provided by pressure regulator 23. The system also works in the same way during the warm period of the year using heat exchangers 3 and 4 as coolers. At the same time, the temperature of the coolant supplied to consumers should be within 0 + 20 ° С. During the transitional period of the year, a part of air conditioners can operate on a flow, and a part - with the consumption of the first recirculation or bypassing the mixing and recuperative apparatuses. During this period, for some apparatuses coolant is required, and for others - coolant, therefore coolant is supplied through pipeline 1, and coolant through pipeline 2 through the corresponding heat exchangers 3 and 4 sensors. Correctors 21, 22 for heat and coolant temperatures set the operation mode valves 9 and I, as well as 8 and 10, i.e., provide the required directionality of their action depending on the temperature of heat and coolant in pipelines 1 and

2. For example, in the cold period of the year, at the command of the thermostat 14, the valves 9, I, 8 and 10 should simultaneously or sequentially open if the temperature of the treated air is below the set value, and in the warm period of the year the same deviation of the air temperature below the set value cause simultaneous or sequential closing of these valves. In the transitional period of the year, when coolant is supplied through pipeline 1, and coolant through pipeline 2, the correctors 21, 22 must ensure the operation of valves 9 and 10 in displacement mode, i.e., when the dew point drops after the mixing apparatuses, the coolant flow through valve I. In this mode, the total coolant flow to the mixing heat and mass transfer apparatus remains unchanged. Claims of the Invention Heat-cooling system for an air-conditioning installation comprising a circulation loop with two feed piping on which heat exchangers are installed and one return piping, air treatment devices with control valves connected to thermostats mounted on the branches from the pipelines, and placed on the lines of heat carrier supply to heat exchangers, control valves connected to temperature sensors installed on the supply pipe x, characterized in that, in order to increase its efficiency, sensors-correctors are installed on the supply pipelines, included in the control circuit of the actuators of the control valves of each of the devices, and on one of the supply pipelines there is a static pressure regulator included in the circuit control valves, connected to the enthalpy corrector sensor, located in the outdoor air flow. Sources of information taken into consideration in the examination: 1. B. V. Barkalov and others. Air conditioning in industrial and public buildings. M., “Mechanical Engineering, 971, p. 191.