HOT WATER SUPPLY SYSTEM

• Main Authors: KUMANOMIDO REI, TODO KAORI, TANAKA HIRONORI, NANAOKA HIROSHI, KUROKI HIROSHI, FUJIMOTO TAKUYA, OSAWA JUNJI
• Format: Patent
• Language: English; Japanese
• Published: 01.11.2018
• Subjects: BLASTING; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

To provide a hot water supply system capable of reducing deviation of power purchase amounts from a commercial power source by time zones.SOLUTION: A hot water supply system includes a hot water storage tank 20 for storing hot water inside, a heat pump unit 30 for heating the hot water stored in the hot water storage tank 20 to a set temperature by using generated heat, and a control device 50 for controlling an operation of the heat pump unit 30. The control device 50 divides a prescribed period into a plurality of time zones, acquires a heat pump estimation power consumption indicating an estimation power consumption by each time zone of the heat pump unit 30, acquires a load estimation power consumption indicating estimation power consumption by each time zone of domestic load 140, and operates the heat pump unit 30 in the time zone overlapped to the time zone in which electric power of a solar power generating portion 110 can be obtained, in the zone time in which an estimation total value indicating the total value of the heat pump estimation power consumption amount and the load estimation power consumption is over a prescribed threshold value.SELECTED DRAWING: Figure 1 【課題】時間帯による商用電源からの買電量の偏りを低減することができる給湯システムを提供する。【解決手段】内部に湯が貯溜された貯湯槽２０と、発生させた熱を用いて貯湯槽２０に貯溜される湯を設定温度まで温めるヒートポンプユニット３０と、ヒートポンプユニット３０の運転を制御する制御装置５０と、を具備し、制御装置５０は、所定の期間を複数の時間帯に区切り、ヒートポンプユニット３０の時間帯ごとの予測電力消費量を示すヒートポンプ予測電力消費量を取得すると共に、家庭内負荷１４０の時間帯ごとの予測電力消費量を示す負荷予測電力消費量を取得し、前記ヒートポンプ予測電力消費量と前記負荷予測電力消費量との合計値を示す予測合計値が所定の閾値を超える時間帯がある場合には、太陽光発電部１１０の電力が得られる時間帯と重複する時間帯にヒートポンプユニット３０を運転させる。【選択図】図１