- Country: USA
- Summary: Helium Liquefier Development (HeLD)
- UST Ref No: 113174537
- Deadline: 29 Jan 2025
- Financier: Self Financed
- Purchaser Ownership: Government
- Tender Value: Refer Document
- Notice Type: Tender
- Document Ref. No.: 80GRC025CA014
- Purchaser's Detail:Login to see full purchaser details. Login to see full purchaser details. Login to see full purchaser details. Login to see full purchaser details. Login to see full purchaser details. Login to see full purchaser details. Login to see full purchaser details. Login to see full purchaser details. Login to see full purchaser details.
- Description:
- Description
Presolicitation Notice - Synopsis
NASA Glenn Research Center/GRC has a requirement for the purchase of liquefiers/refrigerators to support space propulsion and cryogenic research and development activities.
The helium liquefier/refrigerator system must: Implement gas-bearing helium turbo-expanders that have a variable brake design and are located in the cold box at a temperature level below the liquid nitrogen assisted pre-cooling. Variable brake must allow for an output power reduction to approximately 30% of the maximum, while maintaining high efficiency. No more than three turbines are to be used. Be capable of a maximum (liquefaction) capacity of no less than 6.8 g/s of make-up gas supplied at ambient temperatures up to 305.4 K and 1.05 bara, that is supplied to a load at a pressure of 3.5 bara and is sub-cooled to a temperature within 0.05 K of the saturation temperature corresponding to 1.25 bara. For this operating point, the supply pressure to the cold box must not exceed 14 bara. Be capable of using liquid nitrogen to assist in the pre-cooling of the helium down to approximately 80 K. The liquid nitrogen assisted pre-cooling consumption must not exceed 3.7 g/s per 1 g/s of make-up (helium) gas. Be capable of operating, at a reduced capacity, without liquid nitrogen assisted pre-cooling, but using the cold box turbines without requiring the throttling of the (turbine) inlet valves. Not include an integrated purifier. Be designed to allow use of an alternate compressor capable of a discharge pressure of 18.25 bara., utilizing its supplied exergy (at that pressure level). Mechanical design must conform to ASME B31.3 and ASME BPVC Section VIII, as applicable. All vacuum vessels must be designed to ASME BPVC Section VIII, Division 1 or 2 (but are not required to have a U-stamp). The high pressure helium stream for cold box system must be rated no less than 18.25 bara per ASME B31.3. Lower pressure helium and nitrogen streams for cold box... - Documents:
If you are registered member, kindly login to view full details of this tender notice:
CLICK HERE TO LOGINHelium Liquefier Development (HeLD) - USA Tender
The NATIONAL AERONAUTICS AND SPACE ADMINISTRATION, a Government sector organization in USA, has announced a new tender for Helium Liquefier Development (HeLD). This tender is published on USARFP under UST Ref No: 113174537 and is categorized as a Tender. Interested and eligible suppliers are invited to participate by reviewing the tender documents and submitting their bids before the deadline on 2025-01-29.
The estimated tender value is Refer Document, and full details, including technical specifications and submission requirements, are provided in the official tender documents. Ensure all submissions meet the criteria outlined to be considered for evaluation.
