L
Lycaste53
Guest
[FONT="]Our greenhouse in Munch was built in 2009-2010. It is situated at the south front of the house where a loggia and a terrace formerly had been located.
[/FONT]Today, it looks like this:
[FONT="]The greenhouse is about 50 square meters wide and is divided into two parts. Because of this it´s possible to provide two different climate zones.
[/FONT]Concerning the heating: Munich is situated at about 520 m above sea level. We have an average annual temperature of about 9,5°C and in winter about 55 days of 0°C and less. Sometimes temperature falls down to - 20°C in the city. The heating of the greenhouse is provided by two different systems, which work either separately or together.
[FONT="]Along the glass front, there are convector panels to provide the circulation of warm air at the cold surface of the glass.
[/FONT] Also there is a heating under the surface of the floor, to have comfortable temperatures when working barefooted in the greenhouse. The second effect is that, after watering, the floor quickly gets dry again.
[FONT="]Ventilation is done by two fans combined with windows at the ceiling, which open automatically, determined by time and temperature.
[/FONT] Humidification is provided by two humidifiers, which convert osmosis- water to fog by ultrasonic sound. (The same system is used in supermarkets to protect the vegetables from shrivelling)
[FONT="]
[/FONT][FONT="]There are humidity-sensors in both parts of the greenhouse. It is possible to regulate different rates of relative humidity. It looks quite cloudy, when the humidity- units are working.[/FONT]
Water in Munich is very clean (needs no purification and no additives). It has a quality like mineral water, i.e. it contains a lot of minerals, so we call that kind of water ´hard´. Actually we measured a conductivity about 550 µS and a hardness of water of about 20°DH (° DH means ´Deutsche Härtegrade´). That´s a too big amount of ingredients for orchid- cultivation.
[FONT="]First we soften the water with a softening unit:
[/FONT][FONT="]The second step is to prepare osmosis water (which is needed for the humidity-units, they can´t handle hard water). Osmosis water is collected in a 200l tank. It is also used for watering the plants with added fertilizer
The third thing we do is collecting rainwater from the roof of the house in a 5 m³ cistern for storing water, which we situated in a former swimming pool, about 60cm below garden-level[/FONT]
Inside the greenhouse there are 4 taps to be able to access the different kinds of water: Rainwater, osmosis water, normal water and a mixture of osmosis and normal water, which has a conductivity of 60µS
Sun-shading is done by a system of moving sun-breakers, panels of anti-sun-glass, which take off 80% of light. There are photometry instruments outside, which measure the intensity of daylight and open and close the panels by a certain software. At the moment, above 50.000 lux shading closes totally.
[FONT="]During the winter, there is a additional lighting between 16h-21h
[/FONT]
[FONT="]There also is an additional LED- Grow-light at the ceiling of the former loggia, which is used at dark days in summer too.
[/FONT][FONT="]All the facilities of the greenhouse are controlled by a so called ´bus-system´, nearly every action can be determined and controlled via PC. This is not only possible when I´m at home, logging in from outside by using internet is possible too.
[/FONT][FONT="]In this greenhouse, there are living about 800 orchids, most of them like tempereate to warm conditions
Best regards, Gina
[/FONT]
[/FONT]Today, it looks like this:
[FONT="]The greenhouse is about 50 square meters wide and is divided into two parts. Because of this it´s possible to provide two different climate zones.
[/FONT]Concerning the heating: Munich is situated at about 520 m above sea level. We have an average annual temperature of about 9,5°C and in winter about 55 days of 0°C and less. Sometimes temperature falls down to - 20°C in the city. The heating of the greenhouse is provided by two different systems, which work either separately or together.
[FONT="]Along the glass front, there are convector panels to provide the circulation of warm air at the cold surface of the glass.
[/FONT] Also there is a heating under the surface of the floor, to have comfortable temperatures when working barefooted in the greenhouse. The second effect is that, after watering, the floor quickly gets dry again.
[FONT="]Ventilation is done by two fans combined with windows at the ceiling, which open automatically, determined by time and temperature.
[/FONT] Humidification is provided by two humidifiers, which convert osmosis- water to fog by ultrasonic sound. (The same system is used in supermarkets to protect the vegetables from shrivelling)
[FONT="]
[/FONT][FONT="]There are humidity-sensors in both parts of the greenhouse. It is possible to regulate different rates of relative humidity. It looks quite cloudy, when the humidity- units are working.[/FONT]
Water in Munich is very clean (needs no purification and no additives). It has a quality like mineral water, i.e. it contains a lot of minerals, so we call that kind of water ´hard´. Actually we measured a conductivity about 550 µS and a hardness of water of about 20°DH (° DH means ´Deutsche Härtegrade´). That´s a too big amount of ingredients for orchid- cultivation.
[FONT="]First we soften the water with a softening unit:
[/FONT][FONT="]The second step is to prepare osmosis water (which is needed for the humidity-units, they can´t handle hard water). Osmosis water is collected in a 200l tank. It is also used for watering the plants with added fertilizer
The third thing we do is collecting rainwater from the roof of the house in a 5 m³ cistern for storing water, which we situated in a former swimming pool, about 60cm below garden-level[/FONT]
Inside the greenhouse there are 4 taps to be able to access the different kinds of water: Rainwater, osmosis water, normal water and a mixture of osmosis and normal water, which has a conductivity of 60µS
Sun-shading is done by a system of moving sun-breakers, panels of anti-sun-glass, which take off 80% of light. There are photometry instruments outside, which measure the intensity of daylight and open and close the panels by a certain software. At the moment, above 50.000 lux shading closes totally.
[FONT="]During the winter, there is a additional lighting between 16h-21h
[/FONT]
[FONT="]There also is an additional LED- Grow-light at the ceiling of the former loggia, which is used at dark days in summer too.
[/FONT][FONT="]All the facilities of the greenhouse are controlled by a so called ´bus-system´, nearly every action can be determined and controlled via PC. This is not only possible when I´m at home, logging in from outside by using internet is possible too.
[/FONT][FONT="]In this greenhouse, there are living about 800 orchids, most of them like tempereate to warm conditions
Best regards, Gina
[/FONT]
