JPH0593538A - Air conditioning plan evaluating system in building designing stage - Google Patents

Abstract

PURPOSE:To optimally plan in terms of both comfortableness and energy conser vation of an environment in a room by predicting room temperature variations of a plurality of conditioned rooms over a year after a building is completed in a building designing stage. CONSTITUTION:When building conditions such as a building shape, using states of a plurality of rooms, a target value of room temperature, etc., are inputted (1), input data for calculating air conditioning thermal load is automatically formed (2), and an air conditioning thermal load calculated result is analyzed based on the input data (3). Further, when an air conditioning system plan is input at each room (4), yearly temperature variations and yearly energy consumption amounts of respective rooms are automatically calculated, and an air conditioning system plan is evaluated based on it (5). If it is modified, it is again evaluated by returning to building condition input means 1 or air conditioning system planing means 4.

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 optimum air conditioning equipment in terms of both comfort of indoor environment and energy saving in the architectural design stage of an office building.

[0002]

2. Description of the Related Art Most conventional air-conditioning equipment planning methods plan air-conditioning systems based on heat load fluctuations. For example, when air-conditioning a plurality of rooms with a plurality of air-conditioning devices, such as air-conditioning in an office building. There was no method to calculate the room temperature fluctuation of the room, and there was no appropriate method to predict what the indoor space would look like by the air conditioning plan. Therefore, there is no known planning system that provides an optimum air conditioning system corresponding to the usage pattern of the office in the design stage of the office building.

[0003]

In recent years, in order to improve the intellectual productivity of the office, it has been emphasized to make the office environment comfortable and the energy consumption continues to increase. On the other hand, the future energy situation is unpredictable, as typified by global environmental problems and instability in the Middle East. Unlike the era when offices were in a large room and used in a uniform manner, there are currently mixed zones such as OA corners and meeting corners that have different air conditioning considerations, and layout changes frequently due to organizational changes. Therefore, in order to maintain a comfortable environment with minimum energy consumption in the future, it is necessary to consider both office planning and air conditioning plan from the building design stage. However, the conventional air-conditioning system planning method is a method of planning the air-conditioning system based on heat load fluctuations, and there is no appropriate means for predicting what the indoor environment will be like by the air-conditioning plan.

The present invention is to solve the above-mentioned problems, and in the building design stage, it is possible to predict the room temperature fluctuation and energy consumption of a plurality of air-conditioned rooms after the building is completed, and to improve the comfort of the indoor environment. It is an object of the present invention to provide an air-conditioning plan evaluation system at the architectural design stage, which enables optimal planning in terms of both energy saving.

[0005]

Therefore, the air conditioning plan evaluation system in the building design stage of the present invention is
Building condition input means 1 for inputting usage patterns and room temperature target values of a plurality of rooms; creation means 2 for automatically creating air-conditioning heat load calculation input data based on information input to the input means; Air-conditioning heat load analysis means 3 for analyzing the air-conditioning heat load calculation result based on data, air-conditioning system planning means 4 for planning an air-conditioning system based on the air-conditioning heat load, temperature fluctuations and energy consumption of the plurality of rooms And an evaluation unit 5 for evaluating the air conditioning system plan. It should be noted that the numbers added to the above-mentioned configurations are for comparison with the drawings for easy understanding, and the configurations of the present invention are not limited by these.

[0006]

In the present invention, when the building condition such as the usage pattern of a plurality of rooms and the target value of the room temperature is input, the air conditioning heat load is analyzed, and when the air conditioning equipment plan is input for each room, Temperature fluctuations for each room and annual energy consumption are automatically calculated, and based on this, the air conditioning system plan is evaluated, and when changing, return to the building condition input means 1 or the air conditioning system planning means 4. Re-evaluation is done.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of an air conditioning plan evaluation system in the architectural design stage of the present invention. The air-conditioning plan evaluation system of the present invention includes a building condition input means 1 for inputting a building shape, a usage pattern of a plurality of rooms, and a target value of room temperature, and an input for air-conditioning heat load calculation based on the information input to the input means. A creation unit 2 for automatically creating data, an air conditioning heat load analysis unit 3 for analyzing an air conditioning heat load calculation result based on the input data, and an air conditioning system planning unit 4 for planning an air conditioning system based on the air conditioning heat load. And an evaluation unit 5 that calculates temperature fluctuations and energy consumption of the plurality of rooms and evaluates the air conditioning system plan.

The building condition input means 1 inputs building conditions. For this, the usage pattern of the office such as the OA corner and the meeting corner, the arrangement of the heat generating equipment such as the OA equipment, and the indoor environment target value such as room temperature are input. Next, the creating means 2 automatically creates the 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, materials such as building shape, walls, floors, ceilings and windows are input and calculated. Specify the target area. Next, in step S2, the division state of the room, the usage pattern of the room, and the target value of the room temperature are input. Next, in step S3, when the outer wall for setting the 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 the input data of the load calculation program is automatically created.

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

In the air-conditioning system planning means 4, an air-conditioning plan is entered as to how to air-condition the interior zone and perimeter zone, how to select the energy-saving system, the air-conditioning system and the control system, and the design of the device capacity. To do.

Energy saving methods that can be considered include outside air introduction control, air conditioner fan air flow rate control, and pump flow rate control. The outside air introduction control includes outside air cooling, total heat exchanger, and outside air amount CO2 control by any or combination of sensible heat reference control and enthalpy reference control, and air conditioner fan air flow rate control introduction control includes discharge damper control, scroll. There are damper control, suction vane control, and rotation speed control.For pump flow control, constant flow system, unit control system,
There are a rotation speed control method and a combination method of unit number control and rotation speed control.

The air conditioning systems that can be considered are 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 variable air volume system, interior constant air volume system / perimeter fan coil unit system, interior variable air volume system / perimeter fan coil unit system, fan coil unit system for each room, etc.

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.
Variable air volume methods include room control, batch zone control, constant blast temperature, variable blast temperature, and fan coil unit methods such as 2-tube type, 4-tube type, 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 method A1: Interior (representative room temperature control) A2: Interior (return temperature control) (B) Single duct (without perimeter processing) Variable air volume method B1: Interior (each) Room temperature control) (C) Interior constant air volume / perimeter variable air volume system 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 method D1: Interior (temperature control of each room) + Perimeter (representative room temperature control) D2: Interior (temperature control of each room) + Perimeter (temperature control of each room) (E) Interior constant air volume Perimeter fan coil unit system E1: Interior (representative room temperature control) + perimeter (2
Tube type, representative room temperature control) E2: Interior (return temperature control) + perimeter (2-tube type, representative room temperature control) E3: Interior (representative room temperature control) + perimeter (2
Tube type, system batch control) E4: Interior (return temperature control) + perimeter (2-tube type, system batch control) E5: Interior (representative room temperature control) + perimeter (4
Tube type, temperature control for each room) E6: Interior (return temperature control) + perimeter (4 tube type, temperature control for each room) E7: Interior (temperature control for representative room) + perimeter (4
Tube type, representative room temperature control) E8: Interior (return temperature control) + perimeter (4 tube type, representative room temperature control) (F) Interior variable air volume / perimeter fan coil unit method F1: Interior (each room temperature control) + Perimeter (2-tube type, representative room temperature control) F2: Interior (temperature control of each room) + Perimeter (2-tube type, system batch control) F3: Interior (temperature control of each room) + Perimeter (4-tube type, representative room temperature) Control) F4: Interior (temperature control of each room) + Perimeter (4 tube type, temperature control of each room) (G) Fan coil unit method of each room G1: 2 tube type G2: 4 tube type When inputting for each zone, the evaluation means 5 automatically calculates the annual temperature fluctuation for each room and the annual energy consumption, and evaluates the air conditioning plan based on this. When making a change, the process is returned to the building condition input means 1 or the air conditioning system planning means 4 and re-evaluated.

FIG. 3 shows a process for calculating the room temperature fluctuation for each air conditioning system. In step 11, the difference DBN (K) from the reference room temperature of the natural room temperature is calculated, and in step 12, the difference between the zones and rooms is calculated. Calculate the heat load QSL (Z, K) and repeat the above process for each zone and room.
In step 3, the actual heat removal quantity QS (K) for each room in consideration of the above-mentioned air conditioning system is calculated, and in step 14,
By calculating the room temperature of each room and repeating the above process every month, day, and hour, it is possible to obtain the temperature variation for each room for the year.

The output data used for evaluation are the following five types of color graphs and three types of numerical tables. Color graph Room temperature / daily fluctuation graph: Graph showing room temperature changes over time for each room. Room temperature fluctuation frequency distribution graph: Graph showing which temperature is high in each room. Treatment heat quantity / day fluctuation graph: Cooling load. And, the breakdown of the interior zone and the perimeter zone is displayed in a graph showing the change over time of the heating load.

Treatment heat quantity / period variation graph: A graph showing the monthly change of the cooling load and the heating load, in which the details of the interior zone and the perimeter zone are displayed.

Monthly statistical annual calorific value graph: A graph showing monthly and annual cooling loads and heating loads, showing the breakdown of interior zones and perimeter zones.

Numerical table Zone heat load table: Energy consumption of interior zone and perimeter zone by month and by heating / cooling Shortage / excessive heat quantity table: Table showing insufficient heat quantity or excess heat quantity against the target value of room temperature Processing heat quantity / power consumption quantity Since the input / output processing described above is performed interactively on the CRT screen, it is possible to easily study the repetition at the design stage, and it is possible to make an optimal plan from both office planning and air conditioning planning.

[0021]

As described above, according to the present invention, a building condition input means for inputting a building shape, a usage pattern of a plurality of rooms, and a target value of room temperature, and based on 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 air conditioning heat load calculation results 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 the planning means and the evaluation means for calculating the temperature fluctuations and energy consumptions of the plurality of rooms and evaluating the air conditioning system plan, predict the annual room temperature fluctuations and energy consumptions after the building is completed at the building design stage. Therefore, optimal building design and air conditioning plan can be performed in terms of both indoor environment comfort and energy saving. In addition, the suitability of the air-conditioning system plan can be determined based on the generally easy-to-understand room temperature fluctuation, so that it is possible to easily communicate with the orderer.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an 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 a room temperature change for each air conditioning system.

[Explanation of symbols]

1 ... Building condition input means, 2 ... Air-conditioning heat load calculation input data automatic generation means, 3 ... Air-conditioning heat load analysis means, 4 ... Air-conditioning system planning means, 5 ... Air-conditioning system plan evaluation means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Sadako Mizuta Inventor Sadamitsu Kyobashi 2-16-1 Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Teruo Yamada 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Inside Construction Co., Ltd. (72) Inventor Koichi Higashiyama 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd.

Claims (1)

[Claims] 1. A building condition input means for inputting a building shape, a usage pattern 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 method planning means for planning an air conditioning method based on the air conditioning heat load, and temperature fluctuations of the plurality of rooms And an evaluation means for calculating an energy consumption amount and evaluating the air conditioning system plan, the air conditioning plan evaluation system in a building design stage.