成果報告書詳細
管理番号20160000000380
タイトル*平成27年度中間年報 太陽熱エネルギー活用型住宅の技術開発に係る太陽熱活用システムの評価方法の検討
公開日2016/7/28
報告書年度2015 - 2015
委託先名佐藤エネルギーリサーチ株式会社
プロジェクト番号P11005
部署名省エネルギー部
和文要約
英文要約Title : Development of Technology for Residents Using Solar Heat Energy
Midterm Annual Report by March 2016

Abstract
(1) Development of simple evaluation method based on heat balance model
This study is about the air-based solar system for a residential house that collects heat in a solar air heat collector (Double-skin facade or Trombe wall) installed on the south side outer wall and provides warm air into the north side room to reduce heating load. Although the solar heat gain of the south side room is reduced, the heating load in the south side room has been reduced since the improvement of thermal transmittance by considering the heat collector as an air layer. The total heating load of the whole house is reduced by providing collected heat into the north side room. This air-based solar system is presupposed to be installed in the house which is adopted the whole-house continuous heating system. There is no reduction of the heating load even if provides heat collection air to the north side room when heating only a south-facing room. Depending on the specification of the heat collector there is also a possibility that the heating load on the south side room may increase by the reduction of solar heat gain on the south side room.

By postulating that the base heat load without the solar system is known, this model is intended to simulate heat load reduction after the installation of the solar system. Correction factors which created by using a detailed simulation will be used partly when it is unable to describe with simple heat balance model.

This evaluation method is intended to simulate the reduction amount of annual heating load which depends on the specification of the heat collector, characteristic of the house and the location. This method formulates a heat balance equation about the inside air of the heat collector, corrects the thermal insulation performance and the solar heat acquisition performance of the south side room, and with reducing the heat load of the south side room, calculates the reduced amount of heating load of the north side room from the collected heat temperature (the inside air temperature of heat collector) and the air volume.

(2) Collection of information for setting simulation conditions
We have collected setting conditions which meet the standard defined in energy saving act 2016 to simulate the heat load of a residential house. We also have considered how to install heat collectors (Double-skin facade or Trombe wall) to model houses.

(3) Organization of the Evaluation Method Review Committee of the Air-based Solar System
We have organized the Evaluation Method Review Committee of the Air-based Solar System and convened the 1st committee on March 23, 2016.
The committee has confirmed the following:
1) This committee aims only at the air heat collecting part in the solar heat utilization system (MaHAt system + air heat collector system) that have demonstrated with NEDO, there is no limitation of the combined heating or ventilation system.
2) Although target a simple evaluation of every moment, the correction factor will be determined to match annual heating load.
3) In demonstration houses, there are systems that supply air to the heat collector from the air conditioning machine room with the duct and return warm air to the machine room after collecting heat, however, the simple evaluation method adopt a system to provide the room air into the air heat collector.

(4) Acquisition of the overview of demonstration solar houses and the experimental data
We have collected the experimental data and drawing of demonstration solar houses. We also have conducted a field survey on demonstration houses in Hokkaido and Asahikawa on March 25, 2016. We have investigated air ventilation system of demonstration houses and overview the demonstration experiment on sites, and have interviewed designers.
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