Program to monitor and evaluate a passive solar greenhouse/aquaculture system. Final report
A temperature monitoring program of Amity's solar greenhouse demonstrated that air, soil, and water temperatures can be maintained at optimal levels without supplemental heat. A foil reflector placed in front of the greenhouse glazing at an angle of between 0 and 5/sup 0/ above horizontal enhanced direct light entering the greenhouse by as much as 22%. Aquaculture in the water heat storage of a solar greenhouse has been a success. Fish reached harvest size in about seven months. The two species that were received the best by the public were African perch (Tilapia mossambica) and channel catfish (Ictalurus punctatus). Although carp (Cyprinus carpio) were the fastest growers they were not well received by the public. Linking hydroponics to greenhouse aquaculture shows a lot of promise. Different support medias were examined and tomatoes and European cucumbers were raised successfully. A savonius windmill was successfully linked to an aquaculture aeration system but because of the wind pattern in the Willamette valley the windmill system did not provide air in the evening when it was needed most. Alternate designs are discussed. Locally grown fish diets were evaluated for their ability to promote fish growth. Diets such as water hyacinth, duckweed, earthworms, beans, and comfrey were raised on the Amity site, pelleted with a hand grinder and solar dried. Duckweed and earthworms appear to hold promise for a nutritous, easy to grow and pelletize, food source. Amity's solar greenhouse, three coldframe designs and a PVC tunnel cloche were compared in a vegetable growing trial. Most impressive was the cloche design because it provided adequate protection, was inexpensive and very easy to build.
- Research Organization:
- Amity Foundation, Eugene, OR (USA)
- DOE Contract Number:
- FG06-79R000065
- OSTI ID:
- 5500692
- Report Number(s):
- DOE/R0/00065-T1; ON: DE85013338
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140901* -- Solar Thermal Utilization-- Space Heating & Cooling
AQUACULTURE
BUILDINGS
CHLORINATED ALIPHATIC HYDROCARBONS
COVERINGS
DATA
ENVIRONMENTAL QUALITY
EQUIPMENT
EXPERIMENTAL DATA
GLAZING MATERIALS
GREENHOUSES
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROPONIC CULTURE
INFORMATION
LIGHT TRANSMISSION
MACHINERY
MATERIALS
MONITORING
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYVINYLS
PVC
SOLAR CONCENTRATORS
SOLAR EQUIPMENT
SOLAR REFLECTORS
TEMPERATURE MONITORING
TURBINES
TURBOMACHINERY
USES
WATER QUALITY
WIND TURBINES