This project is to devlope a low-temperature rotary expander for use with a long-lived helium liquefier for reliquefaction of vapor boil-off from helium storage dewars. the liquefier is a three-fluid, closed-cycle, linde-hampson (cascade joule-thomson) system operating with argon, neon, and helium… More

Research is proposed leading to the development of a refrigerator for use in spacecraft to provide cooling for low temperature storage of food and biological samples in the temperature range 0 degrees f and capacities in the range 1 to 2 kw. the system proposed operates on the stirling refrigeration… More

Development is proposed of a small, self-contained power unit capable of operating unattended for long periods with great reliability. the unit is intended for incorporated as the storage battery trickle charger in a data gathering and communications system for the arctic and other remote isolated… More

Liquid helium is stored in thermally-insulated dewar vesseks at cryogenic temperatures. natural heat leak through the walls of the dewar causes some of the liquid to boil off. the cold vapor may be used to cool the shields of the dewar and some may be used to cool aparatus or equipment adjacent to… More

Cryocoolers and gas liquefiers utilize isenthalpic expansion of cooled gas in joule-thomson nozzles. to effectively optimize usage of the compressed gas, a variable gas mass flow rate is necessary. a high flow rate is required initially with a progressive reduction as the design condition is… More

A self contained liquefier is being developed to recondense the vapor boiloff from the cryogenic liquid storage dewars of long life space power systems. the proof-of-principle liquefier for the challenging duty of helium liquefaction is a small low capacity (10 litres liquid helium per day)… More

Development is proposed of a long life, high reliability helium liquefier for providing cryogenic refrigeration to spaceborne instrumentation and cryogenic storage dewars. the proposed cryorefrigerator is a triple-fluid, cascade joule-thomson (j-t) system which uses argon, neon, and helium as the… More

Development is proposed of a reliable, quiet, compact engineto utilize waste wood for rural on-site power generation fordomestic, agricultural, and forestry uses. applications would include cogeneration of residential electricity and heating, and power for water pumping, battery charging, and… More

A general use cryorefrigerator will be developed during phase i for liquefying natural gas to fuel private and commercial vehicles. the liquefier is a novel arrangement of an air-charged stirling system that can be configured in either an electrically powered or a natural-gas-powered version. the… More

This project consists of a mobile, self-contained, gas-firednatural gas liquefier system for the economic recovery of natural gas from "capped" wells in remote locations. the system is an innovative arrangement of multiple, truck-mounted stirling liquefier modules that liquefy methane for recovery… More

Research and development is proposed of a novel, self-contained, 200 to 500 kw power generator fuelled by sawmill waste to produce electricity and heat for mill operations and local distribution. the system is powered by a four-cylinder siemens-stirling engine with an innovative arrangement of a… More

Proposed is a new concept for high effectiveness regenerative heat exchangers which are critically needed to develop efficient cryocoolers for operation at temperatures of 10K and below. Development of light weight, power efficient, long life cryocoolers capable of providing refrigeration at and… More

Research and Development is proposed of a novel form of compact freon-free refrigeration system. The proposed unit operates on the Stirling cycle using air as the working fluid. The refrigeratro has an innovative arrangement of four double-acting pistons which will permit a compact, rugged system of… More

Regenerators thermofluid cryorefrigerators the new type of regenerators proposed offers for 10 k cryocoolers the prospect of reductions of 100's of watts of power and kilograms of weight per watt of refrigeration, and extension of operating life by 10,000's of hours. phase 1 will define the… More

Cryocooler microelectromechanical microdynamics integrated general pneumatics corp's preliminary design for employing microdynamics to produce microelectromechanical closed-cycle cryocoolers using silicon processing techniques will be used for making integrated circuits in phase 1. microminiature… More

Development is proposed of a new, rotary form of Stirling cryocooler which offers longer operating life and much lower vibration than reciprocating forms of cryocoolers. The proposed machine has fewer moving parts to wear and can be completely balanced to eliminate vibration in all planes by… More

Development is proposed of a new, rotary form of Stirling cryocooler which offers longer operating life and much lower vibration than reciprocating forms of cryocoolers. The proposed machine has fewer moving parts to wear and can be completely balanced to eliminate vibration in all planes by… More