Boiling pressure drop and local heat transfer distribution of water in horizontal straight tubes at low pressure

Thermal Energy Processes in Direct Steam Generation Solar Systems: Boiling, Condensation and Energy Storage – A Review

“…Wang et al (2014) found a 54% mean deviation from their water flow boiling pressure drop data in a 2 mm by 40 mm narrow rectangular channel. Hardik and Prabhu (2016) found a 59% deviation from their water flow boiling pressure drop data in horizontal tubes. In both of these studies, the Müller-Steinhagen and Heck (1986) and Chisholm (1967) correlations showed better prediction accuracy (<40%) compared to the correlation proposed by Sun and Mishima (2009).…”

“…A similar situation exists for the pressure drop correlations. Since the Müller-Steinhagen and Heck (1986) correlation from 1986, only four prediction methods claim to cover water flow boiling pressure-drop data in conventional-sized and plain channels, namely the Sun and Mishima (2009), Cioncolini et al (2009, and Hardik and Prabhu (2016) correlations. Interested readers are referred to the original texts for the expressions of the correlations, which vary significantly in format from one to the other.…”

Thermal Energy Storage Model Development within the Integrated Energy Systems Hybrid Repository

“…During condensation, Nusselt's condensation correlation is used. Due to the low pressure of the application modeled, the Kandlikar correlation is used during boiling [9] [10]. The Kandlikar correlation calculates a nucleate boiling term and a forced convection boiling term and considers the overall boiling heat transfer value as the sum of the two terms.…”

“…Storworks, previously Bright Energy, storage estimates that their system costs between 50-75 $/kWh [10] [11]. A presentation given to INL in July 2019 indicated that two possible systems could be produced at 62 $/kWh [12].…”

Experimental Approaches to Measurement of Vapor Quality of Two-Phase Flow Boiling

“…Hardik and Prabhu [3] performed experiments to investigate the heat transfer and pressure drop of a diabatic two-phase water flow boiling in horizontal thin walled stainless steel tubes with different inner diameters under uniform wall heat flux conditions. To investigate the impact of vapor quality on the local boiling heat transfer coefficient, they measured vapor quality at the outlet of test section using a known range of uniform wall heat fluxes directly supplied by electrical heating tapes wrapped around the test sections.…”