Abstract:
Systems and methods for selectively producing steam from solar collectors and heaters, for processes including enhanced oil recovery, are disclosed herein, A system in accordance with a particular embodiment includes a water source, a solar collector that includes a collector inlet, a collector outlet, and a plurality of solar concentrators positioned to heat water passing from the collector inlet to the collector outlet, a fuel-fired heater, a steam outlet connected to an oil field injection well, and a water flow network coupled among the water source, the solar collector, the heater, and the steam outlet. The system can further include a controller operatively coupled to the water flow network and programmed with instructions that, when executed, direct at least one portion of the flow through the solar collector and the fuel-fired heater in a first sequence, and direct the at least one portion or a different portion of the flow through the solar collector and the fuel-fired heater in a second sequence different than the first sequence.
Abstract:
Loads 1, 2, . . ., N are controlled by predicting a total energy requirement for the loads 1, 2, . . ., N at prediction points k = 0, 1, 2, . . ., K, by allocating the total energy requirement to the loads 1, 2, . . ., N at prediction points k = 0, 1, 2, . . ., K, by determining a dynamic energy demand requirement for each of the loads 1, 2, . . ., N at prediction points k = 0, 1, 2, . . ., K based on the allocated energy requirements, and by controlling the loads 1, 2, . . ., N based on the dynamic energy demand requirements.
Abstract:
A fluid system for example for steam raising comprising a flow control device (20), means (28) to supply a head of fluid to the flow control device (20), and at least one fluid using means such as a flash boiler (12-14), the flow control device (20) comprising a chamber (48), an inlet (49) to the chamber from the fluid supply means (28), and an outlet (21-23) from the chamber (48), a valve means (40) associated with the outlet (21-23) operable to direct fluid from the outlet (21-23) either to the fluid using means (12-14) or to a relief means (43-45).
Abstract:
Appareil de commande pour commander les generateurs d'une installation de generateurs de vapeur multiples (55) ou de generateurs d'eau chaude multiples (56). L'appareil de commande comprend un appareil de commande du bruleur (87) qui limite chacun des generateurs a l'un d'au moins de deux niveaux differents de vitesse maximum d'allumage. L'appareil de commande est controle par un dispositif de stockage de donnees, tel qu'un micro-ordinateur (61) qui periodiquement ajuste le niveau de vitesse maximum d'allumage des generateurs en fonction des charges predeterminees de l'installation. La vitesse d'allumage des generateurs est controlee par un appareil de modulation qui fait varier la vitesse d'allumage a l'interieur des niveaux maximum de vitesse d'allumage en fonction de la charge de l'installation reelle mesuree. En controlant la vitesse reelle d'allumage en reponse a la fois a la charge predeterminee et a la charge de l'installation reelle, on peut obtenir un rendement de fonctionnement optimal.