The hospital is a high-energy-consumption building. The hospital’s load includes the loads required for HVAC, water supply and drainage, electric lighting, and medical services. The energy consumption index of large general hospitals is higher than that of general civil buildings. Among the loads required for medical services are hot water supply, kitchen supplies, sterilization and washing. Hospitals use both steam and hot water boilers.
The hospital should provide a good environment for patient diagnosis, treatment and rehabilitation, and should be conducive to the medical effect of medical staff. Heating is needed in winter, which cannot be separated from the hot water boiler. Hot water boiler heating can protect the health of medical staff and maintain the performance of diagnostic equipment. At the same time, boilers are also required to supply hot water in winter. On the one hand, because the heat pump is expensive, the operating conditions in the winter are not good; on the other hand, the original boiler in the hospital saves power and runs stably. Especially in the large ward, patients did not evaluate the air conditioner in winter. The general wards of domestic hospitals generally do not have air-conditioning, but only heating in winter. It is required to send hot water directly to the ward, which has been used as an assessment index for hospitals above the Shanghai district level.
With the improvement of people’s living standards, the requirements for the habitability of wards are getting higher and higher. Patients’ hot water consumption increases year by year and requires hot water supply throughout the day. The heat source must also consider the hospital’s medicality, flexibility, reliability and safety. Therefore, the performance requirements of heating and heating equipment in hospitals are correspondingly increased. Most domestic hospitals use coal-fired boilers as the heat source, and the hospital’s steam consumption is very large. Due to environmental protection requirements, the boiler requirements in urban areas are now changed to oil or gas. From the energy consumption analysis, the boiler energy consumption accounts for 70% of the hospital’s energy consumption, while electricity accounts for 18% and gas accounts for 12%.
The amount of steam used in hospitals varies greatly, not only with large daily changes, but also with large seasonal changes, and sometimes emergency steam supply. The traditional view is that since the hospital’s steam supply is essential and the steam can easily convert hot water, there is no need to install a hot water boiler. The result is steam pipelines everywhere. Due to the problems of pipeline sealing, heat preservation, and the quality of valves and traps, the dripping, leaking, and leaking of steam pipelines has not been solved, and energy consumption is difficult to reduce.
In addition to medical characteristics, it is also related to the domestic hot water supply of hospitals relying on steam conversion. Hospital hot water supply is large and fluctuating, causing the hospital’s steam consumption to fluctuate accordingly. Sometimes a large-capacity water storage tank has to be used as a buffer, but it takes up a lot of space and has a large heat loss. For this reason, the traditional countermeasures of hospitals often set up multiple steam boilers and configure different capacities.
Because hot water heating has the advantages of saving fuel, convenient operation and safe management, and small fluctuations in the temperature of the heating room, compared with steam heating, the state has made policy regulations for heating, and vigorously develops hot water heating. Steam heating is now rarely used.
In summary, it is most cost-effective to use a hot water boiler for hospital heating and hot water supply. If it is a hospital disinfection and sterilization, you need to buy a steam boiler. It is forbidden that hot water boiler heating has great advantages over steam boiler heating. Steam boiler to solve the heating problem.
