Determination of Elevator Quantity and Capacity
The number of hotel elevators is a key decision in the architectural design phase. According to Article 4.2.7 of the Code for Design of Hotel Buildings JGJ 62-2014 and industry experience, the number of elevators can be determined by the following principles: (1) For hotels with fewer than 300 guest rooms, no fewer than 4 passenger elevators; (2) For 300-500 guest rooms, 4-6 passenger elevators; (3) For 500-800 guest rooms, 6-8 passenger elevators; (4) For more than 800 guest rooms, more than 8 passenger elevators. Elevator capacity selection: 1600 kg (21 persons) is recommended for five-star hotels, and 1350 kg (18 persons) for economy hotels. Service elevator (freight elevator) configuration: 1 unit for fewer than 200 guest rooms, 2 units for 200-500 rooms, and 3 units for more than 500 rooms. The recommended service elevator capacity is 2000-2500 kg, and the car dimensions should accommodate the entry and exit of linen carts and food service carts (width 1800 mm x depth 2000 mm or more). The number of elevators should also be adjusted according to the building's functional layout (areas with high passenger flow such as conference centers and banquet halls require additional elevators).
Handling Capacity Analysis Methods and Indicator Evaluation
Elevator handling capacity analysis is a technical means of verifying the rationality of the configuration scheme and should be completed during the preliminary design stage of the project. Analysis methods: (1) Traffic flow analysis: investigate the number of people in each functional area (2 persons/guest room, 1.5 persons/m2 for banquet areas, 1 person/seat for restaurants), and calculate the direction and volume of personnel flow between floors during peak periods (breakfast 7:30-8:30, lunch 11:30-12:30, 15 minutes before conference admission); (2) 5-minute handling capacity calculation: 5-minute handling capacity = number of persons transported by elevators within 5 minutes/total number of persons served x 100%. The hotel standard requires no less than 12%-15%; (3) Average waiting time calculation: through simulation of the up-peak traffic pattern or down-peak traffic pattern, it should not exceed 40 seconds; (4) Average travel time calculation: it should not exceed 60 seconds, and for super high-rise hotels it should not exceed 90 seconds. Measures that can be taken when handling capacity is insufficient: increase the number of elevators, increase elevator speed, optimize the group control algorithm, and adjust the vertical layout of functional areas.
Elevator Speed and Grouping/Zoning Strategy
The selection of hotel elevator speed and zoning strategy directly affects passenger experience and equipment investment efficiency. Speed selection recommendations: (1) Building height <60 m (about 15 floors): 1.5-1.75 m/s; (2) Building height 60-100 m (about 16-25 floors): 2.0-2.5 m/s; (3) Building height 100-160 m (about 26-40 floors): 3.0-4.0 m/s; (4) Building height 160-250 m (about 40-60 floors): 4.0-6.0 m/s. Zoning strategy: (1) Low zone/high zone zoning: hotels above 30 floors should preferably be divided into two zones (low zone + high zone) to reduce the average number of stops and improve operating efficiency; (2) High/medium/low three-zone division: super high-rise hotels above 45 floors should preferably be divided into three zones, with each zone serving 15-18 floors; (3) Zoning principle: minimize cross-zone operation, and provide fire stairs and fire elevators in each zone as supplements to vertical transportation. After elevator zoning, an elevator lobby must be provided on the ground floor (lobby) of each zone, and a destination floor selection system should be activated to guide passengers.
Service Elevators and Back-of-House Transportation System
Service elevators (freight elevators) are important facilities for hotel back-of-house support, and their configuration directly affects operational efficiency. Design requirements: (1) Number of service elevators: based on 1 unit per 200 guest rooms, 1 unit for fewer than 200 rooms, and at least 2 units for more than 400 rooms; (2) Capacity: no less than 2000 kg (a standard linen cart + dryer is about 800 kg/unit), and car dimensions no less than width 1800 mm x depth 2000 mm x height 2600 mm; (3) Speed: consistent with or slightly lower than the passenger elevator speed class (1.5-2.5 m/s) to improve back-of-house transportation efficiency; (4) Functional configuration: car floor made of anti-slip and corrosion-resistant material (stainless steel checkered plate recommended), car walls provided with impact guard rails, and landing doors using two-panel telescopic or center-opening two-panel doors (door opening width no less than 1200 mm); (5) Zoned service: large hotels should preferably have an independent back-of-house service elevator system (physically separated from the passenger elevator system), connecting the basement - back-of-house floor - guest room service area. Service elevators should be connected to the standby generator to ensure that key floors remain accessible during power outages.