DE3714576A1 - Installation for the solar heating of greenhouses - Google Patents

Abstract

Published without abstract.

Description

• A) Conventional boilers with heating are used for heating snakes related (sometimes also solar collectors),
• B) insulating glasses are used to reduce heat loss offered,
• C) Blinds or blinds are currently used for shading systems related,
• D) Rainwater is mostly because of the large tank volume not collected,
• E) for diffuse light, the panes are sometimes limed.

The functions mentioned are each carried out by a separate Construction achieved. For this, material is used to a considerable extent and energy (primary and secondary) consumed.

The invention has for its object all 5 requirements to be fulfilled with a system. At least with the heating significantly reduce the heating medium requirement.

On the one hand, the system is said to be diffuse in strong sunshine Generate light for the plants, full light when the sky is overcast guarantee yield, on the other hand, the overcapacity of the Tanning can be converted into heat, which is used to heat the Ge greenhouses can be used on cool days.

The object is achieved according to the invention in that glass fields ( 1 ) are produced with an intermediate space (industrial or possible on existing glazing), which is designed in such a way that no water remains in the installed position (tapering at the bottom, drain at the lowest point ). The fields have 3 connections: 1 inlet ( 3 ), 1 outlet ( 4 ), 1 vent ( 5 ).

They are on the roof surface by hose sections so that the drain ( 4 ) of the upper field opens on a slope without the possibility of water retention in the inlet ( 3 ) of the field below. All fields are connected by a ventilation manifold ( 6 ), which drains into the lowest field when the charging pump ( 2 ) is switched off. The drain hose of the lowest field is slightly narrowed by an insert. As a result, more water flows in than can flow out through the drain. When filling, the fields fill up slowly from bottom to top, pushing the air upwards in the vent manifold until finally excess water pushes out of the vent manifold. It is then passed into a funnel and via a bubbler ( 7 ) into a water collecting basin ( 8 ).

The water reservoirs are housed under the storage areas ( 9 ) for the planters so that the planters are at work height, the rest (depending on capacity) is embedded in the ground or the paths are raised and the pipes for the heating run underneath.

The storage areas for the planters are slightly spaced of the water basin (ventilation), are made of brick (favorable for air humidity and heat compensation) and have so much overhang on the edges that no soil in the water collecting basin falls.

One or more loading pumps ( 2 ) take water from the water collecting basin and pump it into the inlet ( 3 ) of the top glass field. If the pump switches off because there is no sun or the highest charging temperature, the water flows back into the interior of the greenhouse; The glass fields now have air space instead of water filling and thus good thermal insulation.

The water collection basins now give off the heat directly through the wall (uncontrolled), but on the other hand the heat can also be fed indirectly to the heating system through an exchanger (controlled) ( 10 ). With less demanding planting, the heating can also be omitted. In this case, the water can be pumped directly through the heating coils.

To avoid algae growth, the water that flows from the Glass fields runs back into the water collecting basin, via Sprud ler surfaces, which makes it very strong with oxygen enriches. It can also be optionally sprayed over drop sections protective tubes are enriched.

Rainwater can be used to fill the system because of the absence of frost in the greenhouse, do not use chemicals needs to be set and thus alternately used for casting can be used (different season).

A particular advantage of the system is that that the glass fields are filled with water during strong tanning and thus generate diffuse light. Only in midsummer if one Heating of the water collection basin is not desired, the Hose screw connections of the bottom drains with screw caps be locked; the glass fields are then filled with water  filled. The standing water loses oxygen and becomes very warm, which promotes algae growth, which also increases the risk of damage tion to.

The algae can be rinsed in the pipe system and Fields to be removed. These are at the exit points Hose screw connections over the funnels for short-circuiting Drain, charge pump, ventilation manifold and inlet brings.

Claims (6)

1. System for solar heating of greenhouses
Characterized in that the gas elements ( 1 ) of the roof surface can be filled with air when the sun is heating up the system and at low outside temperatures for thermal insulation of the greenhouse. 2. System for solar heating of greenhouses according to claim 1
Characterized in that by the forced drainage of all parts of the system in the outside area when the charge pump ( 2 ) is switched off, the system can be operated with natural rainwater (without antifreeze add-ons and the like) and in an open circuit. 3. System for solar heating of greenhouses according to claim 1
Characterized in that diffusing light for the plants is generated by filling the glass fields with water during tanning. 4. System for solar heating of greenhouses according to claim 1
Characterized in that for the removal of algae from the plant (algae in midsummer is advantageous) cleaning connections for cleaning rinses are installed without obstructing subclaim 2. 5. System for solar heating of greenhouses according to claim 1
Characterized in that in the system bubbler ( 7 ) for Ver put the water with oxygen against algae the glass elements are installed during heating operation. 6. System for solar heating of greenhouses according to claim 1
Characterized in that the glass elements can be retrofitted on existing greenhouses in a similar form without replacing the old glazing (as far as undamaged).