Tochiku Hospital (GHP / GHP Chiller / Micro-Cogeneration)｜Customer Case Studies｜Energy Systems

Designated Medical Corporation Tochiku Hospital

Location: Kitakyushu City, Fukuoka Prefecture, Japan

Products: GHP

Facilities: Education Public Medical

Opening Date: June 1, 1979

Departments: Internal Medicine, Cardiovascular Internal Medicine, Gastroenterology, Respiratory Internal Medicine, Neurology, Diabetes Internal Medicine, Endoscopy, Rheumatology, Rehabilitation

Number of Beds: 68 rooms, 199 beds

Total Floor Area: 12,841 m²

Installed Equipment

GHP (Standard Model): YNZP224K1 × 1 unit, YNZP560K1 × 1 unit, YNZP850K1 × 1 unit (equivalent to 38 horsepower)

GHP (Multi Unit): YWZP450K1 × 2 units, YWZP710K1 × 5 units, YWZP850K1 × 1 unit (equivalent to 187 horsepower)

GHP Chiller: YCWP710JA × 8 units (equivalent to 200 horsepower)

CP Backup Power Supply: CP25D1Z × 2 units

Highlights

1. Demand Control

The new hospital significantly increases the use of gas-powered air conditioning through the expansion of GHP / GHP chillers, while utilizing CP series (Gas micro cogeneration) for power generation to effectively manage electrical demand during peak times.

2. Backup (BCP Compliance)

Yanmar outdoor units are capable of connecting two units, ensuring that if one unit experiences a failure, the other automatically takes over as a backup. This reliable system is installed in critical areas, such as patient rooms and waiting areas, where uninterrupted air conditioning is essential.

3. Power Outage Response

Our cogeneration system provides both electricity and hot water. In the event of a power outage, it is designed to operate autonomously, supplying power primarily through the GHP, allowing the hospital to maintain normal operations without interruption to air conditioning.

4. Outdoor Air Processing

The GHP chiller features an integrated water heat exchanger that produces chilled and hot water. It serves as a heat source for the outdoor air handling unit, cooling or heating the air as necessary when introducing outside air.

Ideal Gas Energy System in Hospitals

Providing a Comfortable Environment for Everyone

This reflects the board’s philosophy: creating a comfortable environment for all. This principle was foundational during the design of the hospital’s systems.

In the new hospital, there was a desire to increase the number of medical devices, including MRI machines, which anticipated an increase in electrical demand. Balancing comfort with the reduction of electrical demand became a significant theme.

To address this, the hospital increased the proportion of gas-powered air conditioning compared to the old facility and expanded the capacity of its cogeneration system. As a result, despite an increase in floor area and medical equipment, the hospital was able to maintain the same level of electrical demand.

Additionally, by selecting a GHP with connected outdoor units and a backup micro-cogeneration system, the hospital has enhanced its preparedness for equipment failures and power outages.

The hospital is committed to continuing innovation in the operation of these systems to ensure a comfortable environment for all.

Product and Service information

The Gas Heat Pump (GHP) Outdoor Unit is a gas-powered air conditioner providing heating and cooling.

GHP Outdoor Unit

The CP Series is a micro-cogeneration system that uses natural gas or biogas to generate electricity on-site while recovering exhaust heat for heating, cooling, and hot water. On-site generation reduces energy losses from transmission and distribution.

CP Series

Customer Case Studies