A hydraulic compressed air energy storage system includes air and liquid tanks, each of which includes interdependent volumes of liquid and air. Each tank includes dedicated passages through which incoming air may be fed, forcing outflow of liquid, or incoming liquid may be fed, forcing outflow of air. Compressed air tanks are connected to a first group of the air and liquid tanks. The system further includes a pump and a liquid turbine, the liquid turbine being electrically connected to a generator for generating electric power. During charging of the system, liquid is pumped through the first group of air and liquid tanks, and air is expelled from the first group of air and liquid tanks and compressed in the compressed air tanks. During discharging of the system, compressed air is released from the compressed air tanks, and said compressed air pumps liquid through the liquid turbine, thereby generating electricity.

A pumping system for liquids, comprising of a direct air displacement pump, which does not require a liquid level sensor mounted inside the pump body. It includes a smart controller which is able to drive and estimate the pump status (full or empty) with sensors mounted above ground.

The present invention relates to a microfluidic assay system and associated reading device, as well as the individual components themselves. The present invention also relates to methods of conducting assays, using a disposable system and associated reading device, as well as kits for conducting assays.

The present invention relates to a microfluidic assay system and associated reading device, as well as the individual components themselves. The present invention also relates to methods of conducting assays, using a disposable system and associated reading device, as well as kits for conducting assays.

A reciprocating piston motor, motor-pump assembly and method for driving a pump. The piston motor includes a pressure medium housing, comprising a first pressure medium chamber having a first pressure medium piston, a second pressure medium chamber having a second pressure medium piston, and a pressure medium control system. The pressure medium control system includes a pressure medium inlet and outlet that are operatively connected to the pressure medium housing. The pressure medium control system is configured to move the pressure medium pistons. A coupling system is provided that is configured to combine the driving forces generated by the first and second pressure medium pistons for driving a fluid pump.

An apparatus having a plurality of pressure exchangers. Each pressure exchanger includes a first conduit and a second conduit and is operable for pressurizing a low-pressure dirty fluid via a high-pressure clean fluid. Each first conduit conveys the high-pressure clean fluid into a corresponding one of the pressure exchangers and to an adjacent one of the pressure exchangers, and each second conduit conveys a pressurized dirty fluid out of a corresponding one of the pressure exchangers and from the adjacent one of the pressure exchangers. The first conduits collectively form at least a portion of a high-pressure clean fluid manifold distributing the high-pressure clean fluid among the pressure exchangers, and the second conduits collectively form at least a portion of a pressurized dirty fluid manifold combining pressurized dirty fluid collectively discharged from the pressure exchangers.

An apparatus having a plurality of pressure exchangers. Each pressure exchanger includes a first conduit and a second conduit and is operable for pressurizing a low-pressure dirty fluid via a high-pressure clean fluid. Each first conduit conveys the high-pressure clean fluid into a corresponding one of the pressure exchangers and to an adjacent one of the pressure exchangers, and each second conduit conveys a pressurized dirty fluid out of a corresponding one of the pressure exchangers and from the adjacent one of the pressure exchangers. The first conduits collectively form at least a portion of a high-pressure clean fluid manifold distributing the high-pressure clean fluid among the pressure exchangers, and the second conduits collectively form at least a portion of a pressurized dirty fluid manifold combining pressurized dirty fluid collectively discharged from the pressure exchangers.

A waste liquid treatment apparatus, a method, and a sample analyzer are provided. The waste liquid treatment apparatus is used for treating waste liquids in waste liquid pipes, and includes at least two waste liquid chambers, a pressure supply device, and a control device. Each waste liquid chamber communicates with at least one waste liquid pipe, and is used for collecting the waste liquid in the waste liquid pipe connected thereto when the inside of the waste liquid treatment chamber is in a negative pressure state. The pressure supply device is connected to each waste liquid chamber, and the control device is configured for controlling the pressure supply device to supply air pressure to each waste liquid chamber, so that the inside of at least one waste liquid chamber is in a negative pressure state at any time during waste liquid treatment, thereby effectively shortening a waste liquid treatment cycle.

A method of pumping a heat transfer fluid in a thermal energy storage system comprising a first thermal energy storage tank connected to a second thermal energy storage tank via a bi-directional flow member. The first and second thermal energy storage tanks are associated with a pressure vessel system comprising a first and second pressure vessel each pressure vessel being partially fillable with an actuating liquid, wherein, the method for pumping comprises: displacing the actuating liquid from the first pressure vessel to the second pressure vessel, thereby creating a pressure difference in the first thermal energy storage tank with respect to the second thermal energy storage tank, and therein displacing the heat transfer fluid via the bi-directional flow member.

A method of pumping a heat transfer fluid in a thermal energy storage system comprising a first thermal energy storage tank connected to a second thermal energy storage tank via a bi-directional flow member. The first and second thermal energy storage tanks are associated with a pressure vessel system comprising a first and second pressure vessel each pressure vessel being partially fillable with an actuating liquid, wherein, the method for pumping comprises: displacing the actuating liquid from the first pressure vessel to the second pressure vessel, thereby creating a pressure difference in the first thermal energy storage tank with respect to the second thermal energy storage tank, and therein displacing the heat transfer fluid via the bi-directional flow member.