| With the development of the national medical and health undertakings and the improvement of people’s living standard,people put forward higher request on the medical service level and health care facilities construction.Different from general civil buildings,medical buildings have more internal departments,more complex medical process and more precision electrical equipment,and the requirement for power supply reliability is high.The hospital building electrical design is an important supporting conditions of hospital modernization construction.At the same time,with the urban development,urban residents’ medical demand is growing,many large hospitals faces the request of the redevelopment or expansion.Due to the complexity and particularity of hospital buildings,there are many differences in electrical design between the rebuilt and new construction general hospital buildings.The electrical design of the rebuilt general hospital buildings have higher requirements on the reliability and safety of the overall electrical design of the old and new hospital buildings,which is becoming the key issues in the electrical design industry in recent years.This article firstly analyses the current development trend of modern hospital building and the domestic and foreign research hotspots of electrical design of hospital building.With a case study of the electrical design in modification works of a comprehensive general hospital in Guangdong,the author analyses the electrical design demand of the old-district reconstruct hospital building.In combination with the engineering design practice,this article systematically explains the design ideas in load forecast,power supply and distribution scheme,power distribution system,lighting system,lighting and grounding system,fire alarm system and other aspects of electrical system design,focus on the key points and difference in the electrical design of old-district reconstruct hospital building,and put forward some methods to guarantee electrical design reliability of the old-district reconstruct hospital building.The electrical design of the old-district reconstruct hospital building must fully guarantee the reliability and safety of electrical engineering,and have different electrical engineering design for the different medical place.The reliable designs of power load,power supply system,emergency safeguard,low-voltage distribution,lighting system,lighting and grounding system and fire alarm system are the key points.At the same time,in the process of electrical design,the integrated design between the rebuilt hospital building with the original hospital buildings be fully considered,reserving space for the long-term reconstruction,to ensure the reliability of the electrical engineering of the entire hospital building... |