Framework and Core Elements of Technical Specifications
The MEP equipment bidding technical specification should include the following core elements: project overview, technical standards and codes, equipment technical parameter requirements, scope of supply, quality assurance requirements, inspection and acceptance standards, installation and commissioning requirements, technical documentation submission, and after-sales service. The project overview describes the basic hotel information to provide suppliers with background for understanding the operating conditions. The technical standards and codes list the standard version numbers that the equipment should comply with. The equipment technical parameter requirements are the most core content and should describe the main parameters in detail. For chillers, the cooling capacity, COP, IPLV, refrigerant type, etc. must be specified; for pumps, the flow rate, head, efficiency, etc. must be specified.
Methods for Determining Technical Parameters and Margins
Reasonable determination of technical parameters is the key to preparing technical specifications. Setting parameters too high leads to increased cost, while setting them too low leads to insufficient performance. Taking chillers as an example, the rated cooling capacity should be determined by multiplying the design load by a reasonable margin coefficient (1.05-1.15). The COP and IPLV settings should comply with the GB 50189 energy-saving standard while also referring to Marriott MIDS recommended values. The particularity of local climate conditions should be considered, such as correcting the impact of air density on cooling towers at high altitudes. Parameter settings should allow a reasonable plus-or-minus deviation range (5%-10%) to avoid being overly stringent.
Quantification of Performance Indicators and Acceptance Standards
Performance indicators in the technical specification should be quantified. Key indicators include: energy efficiency indicators (COP/IPLV), noise indicators (dB(A)), vibration indicators (mm/s), life indicators (design life in years), and reliability indicators (MTBF). For COP/IPLV, the test standard (GB/T 18430.1 or AHRI 550/590) and test conditions should be clearly specified. For noise indicators, the measurement distance and conditions should be clearly specified. Acceptance standards should correspond to performance indicators and clearly define FAT and SAT test methods, conditions, and pass criteria.
Technical Specification Review and Bidding Strategy
The technical specification should be organized for expert review, covering the rationality and completeness of technical parameters, the applicability and timeliness of standards, and the compliance of brand restrictions. Specifying a single brand should be avoided to ensure that at least 3 or more qualified brands can participate. For core equipment, a two-stage bidding process is recommended: the first stage for comparison and selection of technical proposals, and the second stage for commercial bidding. The bid evaluation method may adopt the comprehensive evaluation method (technical weight 30%-40%, commercial 60%-70%) or the lowest evaluated bid price method.