A greenhouse, for cold weather climates, is configured with a gable that is offset toward the north wall and therefore the south extension of the roof, from the gable to the south wall is longer than the north extension. A greater amount of light can enter through this south extension and the inside surface of the north wall is configured with a reflective surface to allow light to be more uniformly distributed around the plants. The north wall may have no widows and may be thermally insulated to prevent the greenhouse from getting too cold during the night. A ground to air heat transfer (GAHT) system may be configured to produce a flow of greenhouse air under the greenhouse for heat transfer, to moderate the temperature of the greenhouse. A thermal medium may flow to a thermal reservoir for heat exchange with the conduits of the GAHT system.

Control process of a thermal plant including a distribution circuit for a carrier fluid having a delivery line and a return line, a central thermal treatment group placed on the circuit, and channels, each of which is hydraulically interposed between the delivery line and the return line to serve respective environments. For each of the channels, the plant includes a respective exchange unit, a flow regulator to regulate a flow rate of carrier fluid through in the respective channel, an ambient temperature detector, a temperature detector of the carrier fluid for detecting a delivery temperature of the carrier fluid in each channel, and a return temperature of the carrier fluid in each channel. The process also includes a thermal optimization procedure as a function of ambient temperature, delivery temperature and return temperature of the carrier fluid.

A heating system comprising an air circulation fan, a heating unit, a memory that is operable to store a temperature map, and a microprocessor. The microprocessor is configured to operate the air circulation fan at a first speed and the heating unit in a first configuration. When the heating unit is in the first configuration, the heating unit is configured to achieve a first temperature and such that less than all of the burners are active. The microprocessor is also configured to receive a temperature set point and to determine a second speed for the air circulation fan using the temperature set point and the temperature map in response to receiving the temperature set point. Further, the microprocessor is configured to transition the air circulation fan from the first speed to the second speed in response to determining the second speed.

Hydronic heating systems, controllers for such systems, and methods of using/operating same are disclosed herein. In one example embodiment, such a system includes at least one condensing boiler and at least one non-condensing boiler, and at least one controller configured for utilizing at least one PID control program to generate at least one signal for controlling firing rates of one or more of the boilers based upon sensed water temperature and temperature setpoint inputs. Depending upon the mode of operation, the at least one PID control program is a first PID control program dedicated to controlling only the at least one condensing boiler, or is a second PID control program dedicated to controlling only the at least one non-condensing boiler, or includes both the first and second PID control programs. Also, outside air temperature serves as a basis for generating the temperature setpoint inputs.

A conditioning or heating plant and a process of controlling the plant, wherein plant comprises at least one circuit for distributing a carrier fluid, having a delivery line, a return line, and a plurality of channels directly or indirectly connected to the delivery line and return line and configured for supplying respective environments to be conditioned and/or heated, at least one heat treatment central group placed on the circuit. The plant has, for each of the channels, at least one respective heat exchange unit and at least one flow-rate regulator.

A conditioning or heating plant and a process of controlling the plant, wherein plant comprises at least one circuit for distributing a carrier fluid, having a delivery line, a return line, and a plurality of channels directly or indirectly connected to the delivery line and return line and configured for supplying respective environments to be conditioned and/or heated, at least one heat treatment central group placed on the circuit. The plant has, for each of the channels, at least one respective heat exchange unit and at least one flow-rate regulator.

A retainer panel having a carrier made of a thermoforming film and a structural surface that is partially directly laminated to the carrier. The thermoforming film is formed to create a three-dimensional relief structure on the carrier. The structural surface is placed on the carrier with an excess of material, to create a wavy contour with peaks and valleys. The valleys are laminated to the carrier and the peaks remain unlaminated. These unlaminated portions of the structural surface are able to deform easily to adapt to the shape of the object that is placed on the retainer panel. The laminated areas of the structural surface also provide a visually recognizable layout grid. The structural surface forms one part of a touch fastener and an object to be placed on the retainer panel carries the complementary part of the touch fastener.

Retainer panel of a panel heating system. The retainer panel has a carrier to which a structural surface is directly laminated. The structural surface is serves as one component of a touch hook-and-loop fastener. The carrier has a relief surface with a configuration of raised and relief areas that forms a grid of channels. The channels are dimensioned to accommodate the layout of a heating tube. The heating tube carries the second component of the touch hook-and-loop fastener that interacts with the first component to hold the heating tube in-place on the retainer panel.

A smart heating system (10) for detecting leaks comprising a boiler (12), a plurality of radiators (14a, 14b, 14c, 14d), and a water circulation system (16). A valve is at or adjacent to the inlet and/or outlet of each radiator (14a, 14b, 14c, 14d) and an electronic pressure gauge is at each radiator (14a, 14b, 14c, 14d) configured to measure a water pressure in the radiator (14a, 14b, 14c, 14d) and/or water circulation system (16) adjacent to the radiator (14a, 14b, 14c, 14d) to generate a pressure reading. Each electronic pressure gauge has an identifier. A user electronic device (20) with a user display is communicatively connected with the electronic pressure gauges so as to be configured to receive and display the pressure readings and identifiers.

An apparatus configured to regulate the circulation of a fluid in a thermal plant includes a differential pressure regulator, a three-way selection valve, and a two-way zone valve. The apparatus can be installed according to a plurality of installation modes, in which: the differential pressure regulator intercepts the delivery circuit or the return circuit of the plant; the two-way zone valve intercepts the delivery circuit or the return circuit; the three-way selection valve is operatively interposed between the delivery circuit and the return circuit; a first inlet/outlet terminal of the three-way selection valve is placed in fluid communication with a high-pressure inlet or a low-pressure inlet of the differential pressure regulator; a second inlet/outlet terminal of the three-way selection valve is in fluid communication with a point of the delivery circuit or of the return circuit; and a third inlet/outlet terminal of the three-way selection valve is in fluid communication with a respective point of the return circuit, if the second inlet/outlet terminal is in communication with the delivery circuit, or of the delivery circuit, if the second inlet/outlet terminal is in communication with the return circuit.