# Case Study | Air Source Heat Pump Installation Project at the Sara Us National Archaeological Site Park Museum
The Sara Us site is a National Key Cultural Relics Protection Unit and a renowned archaeological site from the Paleolithic Age. It is a classic site in China that can be directly compared with Western Paleolithic archaeological cultures. It has been recorded in the annals of world paleontological and paleogeological research, possessing immense cultural, archaeological, scientific, ecological, and tourism value.
The Sara Us National Archaeological Site Park Museum is located in Wudinghe Town, Uxin Banner, Ordos City, Inner Mongolia. The terrain is higher in the northwest and lower in the southeast. The northern part features ridges, floodplains, and sand dunes interspersed, while the southern part exhibits prominent river landforms. The general elevation ranges between 1048 and 1100 meters. Wudinghe Town experiences a temperate continental monsoon climate, with a multi-year average temperature of 7.7°C and an average annual sunshine duration of 2805.4 hours.
Project Background
The Sara Us National Archaeological Site Park Museum has a building area of 6,563.262 m². Calculations determined the required heating area to be 5,370 m² with a total heating load of 304.05 kW, and a cooling area of 4,770 m² with a total cooling load of 528.26 kW.
Project Solution
Based on the load requirements and the design institute's specifications, the client ultimately adopted our company's recommended solution proposal: a low-temperature variable-frequency air-cooled screw heat pump unit. Combining this with the project's actual characteristics, utilizing this unit solution offers the following advantages:
- (1) Integrated Cooling and Heating: The unit integrates both cooling and heating functions, capable of providing cooling in summer and heating in winter, serving multiple purposes with a single unit. Therefore, air-cooled heat pump units are often the preferred solution in HVAC engineering designs for buildings requiring year-round air conditioning that lack a dedicated heating boiler, district heating network, or other stable and reliable heat sources.
- (2) Flexible System Integration: The unit can be combined with fan coil units (FCUs), cabinet air handling units (AHUs), ceiling-mounted AHUs, modular AHUs, and dedicated outdoor air systems (DOAS) to form centralized or semi-centralized air conditioning systems. This solution inherits many advantages of FCU systems, including flexible layout, aesthetic appearance, space savings, convenient control, the ability to turn individual zones on/off without affecting others, and low operating noise.
- (3) Simplified System Structure and Energy Savings: The system eliminates many auxiliary components essential for water-cooled systems, such as cooling towers, cooling water pumps, boilers, and their associated piping. This results in a simpler system structure, reduced installation space requirements, easier maintenance management, and energy savings. It also avoids issues like condenser scaling and pipe blockage caused by poor water quality in certain regions, while concurrently conserving water resources.
Project Installation
Purification Unit Installation
Low-Temperature Screw Unit Installation
Overall Installation and Commissioning Completed