JP2939912B2 - Air conditioning plan evaluation system at the architectural design stage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-conditioning plan evaluation system capable of providing an optimum air-conditioning system in terms of both indoor environment comfort and energy saving in an architectural design stage of an office building.

[0002]

2. Description of the Related Art Most conventional air conditioning equipment planning methods are based on a method of planning an air conditioning system based on a change in heat load. For example, in a case where a plurality of rooms are air-conditioned by a plurality of air conditioners as in an office building. There is no method for calculating the room temperature fluctuation of the room, and there is no appropriate method for predicting what the indoor space will be based on the air conditioning plan. Accordingly, there is no known planning system that provides an optimal air conditioning system corresponding to the usage of offices in the design stage of an office building.

[0003]

In recent years, in order to improve intellectual productivity of offices, emphasis has been placed on comfort of office environments and energy consumption has been increasing. On the other hand, the future energy situation is unpredictable, as typified by global environmental problems and the unstable situation in the Middle East. Unlike the times when offices were large rooms with uniform usage, zones with different air-conditioning considerations, such as OA corners and meeting corners, are now mixed, and layout changes are frequently made due to organizational changes. In order to maintain a comfortable environment with minimum energy consumption in the future, it is necessary to mutually examine office planning and air conditioning planning from the building design stage. However, the conventional air-conditioning method planning method is a method of planning an air-conditioning method based on a change in heat load, and there is no appropriate means for predicting what the indoor environment will be based on the air-conditioning plan.

[0004] The present invention solves the above-mentioned problems. In the architectural design stage, room temperature fluctuation and energy consumption of a plurality of air-conditioned rooms after completion of a building can be predicted over a year, thereby improving indoor environment comfort and comfort. It is an object of the present invention to provide an air-conditioning plan evaluation system in an architectural design stage that can perform an optimal plan in both energy saving.

[0005]

For that purpose, the air conditioning plan evaluation system in the architectural design stage according to the present invention comprises:
A building condition input means 1 for inputting a use form of a plurality of rooms and a target value of a room temperature; a generating means 2 for automatically generating input data for air-conditioning heat load calculation based on information input to the input means; Air-conditioning heat load analyzing means 3 for analyzing the result of air-conditioning heat load calculation based on data; air-conditioning method planning means 4 for planning an air-conditioning method based on the air-conditioning heat load; temperature fluctuation and energy consumption of the plurality of rooms And evaluating means 5 for calculating the air conditioning scheme plan. The numbers added to the above configuration are for comparison with the drawings for easy understanding, and do not limit the configuration of the present invention at all.

[0006]

In the present invention, when the building conditions such as the usage form of a plurality of rooms and the target value of the room temperature are input, the air conditioning heat load is analyzed. Further, when the air conditioning equipment plan is input for each room, the annual The temperature fluctuation and the annual energy consumption for each room are automatically calculated, and based on this, the air conditioning system plan is evaluated. If the air conditioning system plan is changed, the process returns to the building condition input means 1 or the air conditioning system planning means 4. Re-evaluation is performed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing one embodiment of an air conditioning plan evaluation system in a building design stage of the present invention. An air-conditioning plan evaluation system according to the present invention includes a building condition input unit 1 for inputting a building shape, a use form of a plurality of rooms and a target value of room temperature, and an input for air-conditioning heat load calculation based on information input to the input unit. Creation means 2 for automatically creating data; air conditioning heat load analysis means 3 for analyzing the air conditioning heat load calculation result based on the input data; and air conditioning scheme planning means 4 for planning an air conditioning scheme based on the air conditioning heat load. Evaluation means 5 for calculating temperature fluctuations and energy consumption of the plurality of rooms and evaluating the air conditioning system plan.

In the construction condition input means 1, construction conditions are inputted. For this, an office use form such as an OA corner or a meeting corner, an arrangement of a heating device such as an OA device, and an indoor environment target value such as a room temperature are input. Next, the creating means 2 automatically creates air conditioning heat load calculation input data based on the information input to the input means 1.

FIG. 2 shows a method for automatically creating input data for air conditioning heat load calculation using CAD. First, in step S1, an architectural shape and materials such as walls, floors, ceilings, windows, etc. are input and calculated. Specify the target area. Next, in step S2, the division state of the room, the use form of the room, and the target value of the room temperature are input. Next, in step S3, when an outer wall for setting a perimeter zone is designated, the perimeter zone and the interior zone are automatically recognized. Finally, in step S4, the air conditioning heat load calculation unit (space) is automatically recognized under the conditions of steps S1 and S2, and input data of the load calculation program is automatically created.

Returning to FIG. 1, the air-conditioning heat load analyzing means 3 automatically generates an air-conditioning heat load analysis result of 365 days a year × 24 hours by a load calculation program using the data of the generating means 2.

The air-conditioning system planning means 4 inputs an air-conditioning plan for how to air-condition the interior zone and perimeter zone, how to select an energy-saving system, an air-conditioning system and a control system, and how to select a device capacity design. I do.

The energy saving methods that can be considered include outside air introduction control, air conditioner fan air flow control, and pump flow control. The outside air introduction control includes outside air cooling, a total heat exchanger, and the outside air amount CO2 control by any or a combination of the sensible heat reference control and the enthalpy reference control, and the air conditioning fan air flow control introduction control includes discharge damper control, scrolling There are damper control, suction vane control, rotation speed control, and pump flow control includes constant flow method, number control method,
There are a number-of-rotations control method and a combination method of number-of-units control and number-of-rotations control.

The air conditioning systems that can be considered include a single duct (without perimeter processing) constant air volume system, a single duct (without perimeter processing) variable air volume system, an interior constant air volume / perimeter variable air volume system, an interior variable air volume system / perimeter. There are a variable air volume system, an interior constant air volume system, a perimeter fan coil unit system, an interior variable air volume system, a perimeter fan coil unit system, and a fan coil unit system for each room.

As a control method that can be considered, there is a representative room temperature control or a return temperature control as a constant air volume method.
The variable air volume method includes room control, zone collective control, constant air temperature, and variable air temperature. Fan coil unit method includes two-tube type, four-tube type, individual room control, zone collective control, system collective control, etc. There is.

The air conditioning plans considered from the above examination items are listed below. (A) Single duct (without perimeter processing) Constant air volume system A1: Interior (representative room temperature control) A2: Interior (return temperature control) (B) Single duct (without perimeter processing) Variable air volume system B1: Interior (each (C) Interior constant air volume / perimeter variable air volume method C1: Interior (representative room temperature control) + perimeter (representative room temperature control) C2: Interior (return temperature control) + perimeter (representative room temperature control) (D ) Interior variable air volume / perimeter variable air volume system D1: Interior (temperature control of each room) + Perimeter (temperature control of representative room) D2: Interior (temperature control of each room) + Perimeter (temperature control of each room) (E) Constant air volume of interior Perimeter fan coil unit method E1: Interior (representative room temperature control) + perimeter (2
E2: Interior (return temperature control) + perimeter (two-tube type, representative room temperature control) E3: Interior (representative room temperature control) + perimeter (2
E4: Interior (return temperature control) + perimeter (two-tube, system collective control) E5: Interior (representative room temperature control) + perimeter (4
E6: Interior (return temperature control) + perimeter (4-tube, each room temperature control) E7: Interior (representative room temperature control) + perimeter (4
E8: Interior (return temperature control) + Perimeter (4-tube, representative room temperature control) (F) Interior variable airflow / perimeter fan coil unit system F1: Interior (temperature control of each room) + Perimeter (two-tube type, representative room temperature control) F2: Interior (each room temperature control) + perimeter (two-tube type, system collective control) F3: Interior (each room temperature control) + perimeter (four-tube type, representative room temperature) Control) F4: Interior (temperature control for each room) + Perimeter (4 tube type, temperature control for each room) (G) Fan coil unit type for each room G1: 2 tube type G2: 4 tube type When input is made for each zone, the evaluation means 5 automatically calculates the annual temperature fluctuation of each room and the annual energy consumption, and evaluates the air conditioning plan based on this. If it is to be changed, the procedure returns to the building condition input means 1 or the air-conditioning scheme planning means 4 to perform a re-evaluation.

FIG. 3 shows a process for calculating a room temperature variation for each air conditioning system. In step 11, the difference DBN (K) from the natural room temperature to the reference room temperature is calculated. The heat load QSL (Z, K) is calculated, and the above processing is repeated for each zone and each room.
In step 3, the actual amount of heat removed QS (K) for each room in consideration of the air conditioning method described above is calculated.
The room temperature of each room is calculated, and the above process is repeated every month, day, and hour, so that annual temperature fluctuation of each room can be obtained.

The output data used for the evaluation are the following five types of color graphs and three types of numerical tables. Color graph Room temperature / daily fluctuation graph: A graph showing the change of room temperature in each room on a daily basis Room temperature fluctuation frequency distribution graph: A graph showing which frequency is high in each room Processing heat / daily fluctuation graph: Cooling load Further, the breakdown of the interior zone and the perimeter zone is displayed in a graph representing the change in date and time of the heating load.

Processing heat amount / period variation graph: Breakdown of interior zone and perimeter zone is displayed in a graph showing the monthly change of cooling load and heating load.

Monthly statistical annual calorie graph: A graph showing the monthly and annual cooling load and heating load, and the details of the interior zone and the perimeter zone are displayed.

Numerical Table Zone heat load table: Energy consumption of each interior zone and perimeter zone for each month and cooling and heating Insufficient / excess heat table: A table showing insufficient or excess heat for the target value of room temperature Processing heat / power consumption Table The input / output processing described above is performed interactively on the CRT screen, so that it is easy to consider repetition at the design stage, and an optimal plan can be made from both the office planning and the air conditioning plan.

[0021]

As described above, according to the present invention, building condition input means for inputting a building shape, a use form of a plurality of rooms, and a target value of room temperature, and information based on the information input to the input means. Creating means for automatically creating input data for air-conditioning heat load calculation, air-conditioning heat load analyzing means for analyzing the air-conditioning heat load calculation result based on the input data, and air-conditioning method for planning an air-conditioning method based on the air-conditioning heat load In order to include a planning means and an evaluation means for calculating the temperature fluctuation and the energy consumption of the plurality of rooms and evaluating the air conditioning system plan, predict the annual room temperature fluctuation and the energy consumption after the building is completed in the architectural design stage. Therefore, it is possible to perform an optimal architectural design and an air conditioning plan in both the comfort of the indoor environment and the energy saving. In addition, since the suitability of the air-conditioning scheme plan can be determined based on room temperature fluctuation which is generally easy to understand, it is possible to easily communicate with the orderer.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of an air conditioning plan evaluation system in a building design stage of the present invention.

FIG. 2 is a flowchart for explaining a method of automatically creating input data for air conditioning heat load calculation using CAD.

FIG. 3 is a flowchart showing a process for calculating room temperature fluctuation for each air conditioning system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Building condition input means, 2 ... Air-conditioning heat load calculation input data automatic preparation means, 3 ... Air conditioning heat load analysis means, 4 ... Air conditioning scheme planning means, 5 ... Air conditioning scheme planning evaluation means.

Continued on the front page (72) Inventor: Sadamitsu Mizuta 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor: Teruo Yamada 2-1-1, Kyobashi, Chuo-ku, Tokyo Shimizu Corporation (72) Inventor Koichi Higashiyama 2-6-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (56) References JP-A-62-17560 (JP, A) (58) Fields investigated (Int. . ^6, DB name) F24F 11/02

Claims (1)

(57) [Claims] 1. A building condition input means for inputting a building shape, a use form of a plurality of rooms and a target value of room temperature, and input data for air-conditioning heat load calculation are automatically created based on information input to the input means. Creating means; air conditioning heat load analyzing means for analyzing the air conditioning heat load calculation result based on the input data; air conditioning scheme planning means for planning an air conditioning scheme based on the air conditioning heat load; and temperature fluctuations of the plurality of rooms. And an evaluation means for calculating energy consumption and evaluating the air conditioning scheme plan. An air conditioning plan evaluation system in a building design stage.