A new generation apparatus for the astronauts' water provision during long-term space flights

 

The apparatus is intended for the regeneration of water from a manned spacecraft crew's liquid vital activity wastes.

The apparatus consists of a centrifugal distiller, a thermoelectric heat pump and prefiltering and reconstruction devices.

 

Parameters of the apparatus:

 

-           renovated water efficiency - up to 6 I /hour;

-           specific energy consumption - < 100 W-hour/l;

-           water purification rate (recovery) - 92-95%;

-         apparatus capacity- 0.1 m3;

-         weight - 30 kg.

 

As compared to the well-known analogues, it shows the specific energy consumption by 1.5 to 3 times lower, water purification rate from 10 to 20% higher whereas dimensions and weight are from 2 to 3 times smaller.

The apparatus was designed and developed on the base of scientific achievements of the national Technical University of Ukraine “Kyiv Polytechnic Institute” and the Institute of Thermoelectricity of the National academy of Sciences and the Ministry of Education and Sciences of Ukraine.

 

Table 1. Technical parameters of Distiller CD-5

 

Name of parameter

Dimensions

Significance

The number of cascades

 

5

Power of drive motor

W.

200

Performance of distillate

l/hour

5,0

Resistivity power

W—hour/l

<110

The extraction degree

,%

93-95

Weight

kg

19,6

Dimensions

Мм

600х280х280

 

Table 2. The main results of the chemical analysis of distiller received at work CD-5 on urine

 

 

TDS ppn

TOC ppn

Ammonia mg/l

Conductivity MSm

Standard

<100

<200

<10

<200

Testing results

50…55

27…32

6,7…9,5

<110

 

Development is protected by patents of Ukraine (№ 35941А from 16.04/2001yr.), Russia (№ 2127627 from 21.07.1998yr.) and in two by U.S.A. patents (Patent No.: US 6,258,215 Bl. Date of Patent: Jul. 10.2001; US Patent 7610768 B2 – November 3, 2009).

In 2008-2009 years system CD-5 + THP was a long-term testing on the stand NASA in the U.S.A. During the tests, it was work up more than 1,500 liters of waste water (sanitary-hygienic water, urine, condensate evaporation).

 

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