Abstract: An apparatus and method for mixing water and a water-soluble emulsion polymer by providing the optimum amount of mixing energy required for the polymer to effectively dissolve the polymer in the water without causing the polymer molecules to shear into smaller polymer molecules. The apparatus includes a pump means, a static mixing means and a mixing chamber means. A first circulation means connects the pump means to the mixing chamber means. A second circulation means connects the pump means to the static mixing means and further connects the static mixing means the mixing chamber means. A third circulation means connects the static mixing means to the mixing chamber means. Additionally, a flow control means selectively circulates a combined stream of the water and the polymer alternatively through the first circulation means, the second circulation means or the third circulation means. The method of using this apparatus is also disclosed.

Abstract: A test coupon, more particularly a deposition test coupon, for measuring the deposition rate of scale on surfaces in contact with a scale-forming medium such as industrial cooling water.

Abstract: A vapor-type heat exchanger is disclosed in which cooling fluid conduit means are located within shell means and vapor inlet means and condensate outlet means are provided in the shell means to provide for the ingress and egress of a fluid to be cooled. By locating the vapor inlet means below the cooling fluid conduit means and the condensate outlet means above the same, it is ensured that the cooling fluid conduit means will be submersed in liquid.

Abstract: Apparatus for determining corrosion or deposition rate of corrosive constituents in the flue gases of a boiler system. A probe loop has a coolant circulating therethrough wherein the loop includes a removable specimen that can be tested for deposition or corrosion rate. The coolant recirculates through the loop to maintain the surface temperature of the specimen substantially constant approximating the maximum corrosion temperature. Coolant is fed to the probe loop by a coolant tank which includes a liquid coolant reservoir in a lower portion thereof and a gas chamber for gaseous coolant in an upper portion thereof. The gas pressure within the gas chamber can be varied so as to vary the boiling point temperature of the liquid coolant. The gas chamber is connected to the lower end of a condenser coil which has a variable heat transfer area. Between the gas chamber and the condenser coil is located a contact bed to enhance the contact of condensed coolant and gaseous coolant.